This is a good list I found, I removed some of the less relevant obvious definitions that are on the website, and added some highlights or examples to others in parenthesis, (Low Blow commentary for example).
https://www.titleboxing.com/boxing-dictionary
Accidental Butt: It is ruled an accidental butt when two fighters heads collide and the referee determines that neither fighter intentionally head-butted the other. Typically both fighters are warned to be careful, but no fighter is penalized.
Alphabet Groups: This is a negative term is used to describe the numerous sanctioning bodies of boxing; the WBC, WBA, WBO, etc.
Be First: When your coach tells you to "be first" he or she is wanting you to throw your punches before your opponent. In other terms, he/she wants you to be aggressive.
Canvas: Although these days the ring flooring can also be vinyl, boxing rings were traditionally made from canvas and were called that. This is now a general term used to reference the floor of the boxing ring.
Caught Cold: This is a term used to describe a boxer who gets hurt in the opening rounds or stopped early in the fight because he or she was not mentally or physically prepared or warmed-up.
Check Hook: This counter-hook is designed to counter the attack of an aggressive fighter and consists pivoting on your lead leg while throwing a hook to catch your forward-charging opponent.
Clinch: A term used to describe when two fighters grab onto or hold each other to prevent an exchange or to slow the action. One fighter may also use this tactic when he is hurt, to prevent absorbing additional punishment.
Contender: This is a qualified opponent who has worked his way up the ranks in order to challenge for the world title.
Corkscrew Punch: This is a punch thrown in an overhand, arching motion that twists on impact and is intended to cause a cut.
Counterpunch: This is any punch that is thrown in return or comes back as a response to an offensive move.
Cover-Up: This is a defensive move employed by a fighter to avoid getting hit. He or she simply hides beneath and behind their gloves to avoid direct contact from an offensive attack.
Cross: A power punch thrown with the rear hand and travels across the fighter’s body.
Dive: This is when one fighter purposely goes down for the count or pretends to be knocked out.
Eight Count: When one fighter is knocked down, a referee can administer a count of eight to give the fighter time to recover or so that he (the referee) can better assess the situation.
Enswell: This is an official name for a piece of metal or hard compress used to reduce swelling on a boxer’s face.
Faded: Usually refers to a fighter who runs out of gas in the later rounds or who, overall in terms of his boxing career, is no longer performing at his best.
Feint: Faking or feinting a punch is used to make an opponent unnecessarily react, or to gauge his response so that it throws him off his game or makes him commit to a false move.
Flash Knockdown: This typically describes a quick knockdown or brief trip to the canvas where the fighter that goes down was only temporarily caught off-guard, off balance, or clipped, but suffered no significant damage.
Fringe Contender: This usually refers to a lesser-known or low ranking fighter who is about to break into the higher rankings, but doesn’t typically pose much of a threat.
Gate: This is theamount of money generated on-site, from the sale of tickets.
Gatekeeper: Term used to describe a fighter who is not a threat to be champion, but opponents can establish themselves as a legitimate contender by beating him.
Get Off: This refers to a fighter’s ability to “let his hands go” or throw uninhibited; to mount an effective offensive attack. "you need to get off first"
Glass Jaw: A negative term used to describe a fighter who can’t take a good punch consistently, who gets knocked out easily or has a questionable chin. (ex: Amir Khan)
Go to the Cards: An occurrence where neither fighter is knocked out or stopped. The decision, as to who won the fight, is made by assigned judges who have scored each round as the bout has progressed.
Haymaker: A desperation punch thrown with full force and with the intent to knock an opponent out.
Hook: This punch is thrown with the lead or front hand and is delivered in a semi-circular pattern. The hook is executed by leading with your front hand, bringing your elbow up and rotating the front side of your body (in a similar motion as slamming a door.) It is meant to reach beyond your opponent’s guard and make contact with the side of his head or chin.
Infighting: This is also called “inside fighting” or exchanging punches at close-range.
Jab: The jab is a punch that is thrown with your front hand and delivered straight at your opponent. It should be the centerpiece of any boxing offense.
Journeyman: This is a term that means a fighter who is always “in the game,” semi-relevant, but not typically in title contention. A journeyman is used by up-and-coming fighters to test their skills and, in many cases, gain a recognizable win over a “name” on their record. Journeymen are constantly on their own journey (never arriving) and part of a future champion’s journey to notoriety. Also frequently a "gatekeeper" at the same time.
Kidney Punch: This is an illegal blow thrown at an opponent’s lower back, usually while in a clinch or as a counterpunch.
Lead Right: A lead right is delivered in place of a lead jab, but is harder to execute because it has to travel across the distance of a fighters body to land, so it has to be thrown quickly and catch an opponent off-guard.
Lineal Champion: This is when a fighter wins the title from the fighter who won the title and it has been passed down through a direct line of champions. It is, in essence, “the man who beat the man.”
Low Blow: This is any punch that is thrown or strays below the waistband of a boxer’s trunks.
It can also be an imaginary line at the base of the midsection, where the referee had deemed illegal.
(typically the imaginary line is at the referees discretion if the beltline/waistband of a boxer doesn't clearly mark the actual BASE of the midsection, or when the beltline/waistband of the shorts cover a guy's navel, it will be deemed higher than the base of the midsection and the ref makes visual adjustments accordingly. In that case an opponent can be hit below the waistband/beltline yet not be considered a low blow)
Mauler: Most often this is used to describe a fighter who likes to fight wildly on the inside and use roughhouse tactics to nullify their opponent’s effectiveness.
Majority Decision: (awarded by the majority of the judges) When two of the three judges score it for one fighter, while the third judge scores it a draw.
Majority Draw: When two of the three judges score the fight as a draw, while the third judge scores it for one of the fighters.
Neutral Corner: Each of the two fighters are assigned a red or blue corner. Two white corners of the ring are remaining and are considered “neutral territory.” Neither fighters cornermen are stationed there so it’s where a fighter is sent if he knocks his or her opponent down. They remain there while a count is administered by the referee.
No-Decision: When it has been pre-determined by both fighters that a particular fight will not go on their records, for a variety of reasons, or when a fight is prematurely ended due to an unintentional head butt or cut, it can be ruled a no-contest or no decision.
On the Ropes: Whether purposely, as a defensive technique, or he is forced to fight from this position by a more aggressive opponent, a fighter who lays against the ring ropes is considered “on the ropes.”
Orthodox: A right-handed fighter or one who leads with a left jab and uses his back, or right hand as his cross.
Outside Fighter: Boxers who prefer to fight from the outside, typically behind a long jab, from long-range are considered outside fighters.
Overhand: A punch that is delivered in an arching motion, traveling downward on the opponent.
Palooka: This is an old boxing term used to describe a fighter who is uneducated, who is lacking in ability and/or who is generally clumsy.
Parry: This is when you not only block an incoming punch, but actually re-direct it away from your body or the intended target.
Paw: When you don’t fully commit to a punch and throw it any real intent to land, but more like you are
testing the waters, this is referred to as “pawing.”
Peek-A-Boo: This style of fighting was attributed to legendary trainer Cus D’Amato and involved placing your hands high in front of your face, providing a lot of angles to confuse your opponent and moving your upper torso rapidly from side to side. Mike Tyson was famous for employing this type of style.
Play Possum: This is when a fighter acts like he is hurt or tired in an attempt to lure his opponent in and carelessly leave himself open, while attempting to take advantage of the “vulnerable” fighter.
Plodder: A heavy-footed, slow fighter who consistently moves forward is considered “a plodder.”
Point Deduction: A point is taken away from a fighter when a blatant foul or rule infraction occurs. It can also happen after several warnings have been issued, such as in a case of unintentional, but repeated low blows.
Pound-for-Pound: This term is used to describe a fighter’s skill level regardless of weight category. It originated with and is commonly used to describe Sugar Ray Robinson, whose skill and overall ring generalship would translate into and transcend any weight division.
Pull: A defensive move where a fighter leans away from or pulls back from to avoid being hit.
Pull Your Punches: When a punch is not delivered at full force, but held back. Fighters sparring each other may pull their punches to keep the intensity light. Some fighters may do it in a competitive match to trick their opponent into a feeling of safety before they surprise them by throwing with full power.
Puncher’s Chance: A term used to describe the type of fighter, who although may be outclassed, still possesses the kind of knock out power to end a fighter with one punch. He could clearly not outbox his opponent, but would always have a chance to win based on his power.
Rabbit Punch: This is any punch that is delivered to the back of another fighter's head. It is an illegal blow, due to being highly dangerous. It is called that because of its similarity to the way that hunters used to kill rabbits.
Ring Generalship: This is the manner in which a fighter controls the action in the ring and understands his position. It is the way he is able to impose his will on his opponent and strategically outmaneuver him.
Roll with the Punches: The ability to move with a punch to reduce its impact or turn in that same direction so that it doesn’t land cleanly.
Rope-a-Dope: When you maintain a defensive posture on the ropes in an attempt to outlast or tire your opponent, is considered rope-a-dope. It is most recognized and was actually given that name by Muhammad Ali when he employed the technique to defeat George Foreman.
Roughhousing: When an opponent uses “questionable” offensive tactics, is highly physical and aggressive it is considered to be “roughhouse tactics.”
Rubber Match: When two fighters have fought three times, each having won one of the previous matches each, this one deciding who will win best of three, it is called a rubber match.
Saved by the Bell: If a fighter is knocked down and seemingly cannot get up by the time the round ends, he is considered to have been “saved by the bell.”
Shifting: An offensive technique where you change your lead foot, shift your weight to gain more power. You are basically changing from orthodox to southpaw as you deliver a punch.
Shoe Shine: A series of flashy punches, in quick succession, that look impressive, but do little damage.
Shopworn: This refers to a fighter who has taken too much punishment or suffered too much wear and tear on his body over the course of his career.
Shoulder Roll: This is a defensive move where a fighter leaves his front arm low and drapes it across his midsection, so that when his opponent throws a punch he can use his shoulder to block or roll with it. This is so the defensive fighter is able to counter back with either hand, because neither was used for blocking. For a right-handed fighter, it also automatically shifts his weigh to his back foot and sets him up for a hard counter right cross. Although Floyd Mayweather has become known for this, many great fighters like Jersey Joe Walcott were masters of this defensive technique.
Slip: When you move your head to avoid getting hit.
Southpaw: Slang for a left-handed fighter or someone who is left hand dominant.
Split Decision: (split between the two fighters) When two of the three judges score the bout for one fighter and one judge scores it for the other.
Split Decision Draw: When one judge scores the bout for one fighter, the next judge scores it for the other and the third judge scores it a draw.
Stick and Move: This is an offensive style of fighting that incorporates a great deal of movement, punching and moving constantly.
Stylist: A fighter who uses skill and technique more than power is considered “a stylist.”
Sucker Punch: A punch thrown at an unsuspecting victim or after the bell has sounded.
Technical Decision: When a fight is stopped early due to a cut, disqualification or any situation when the bout is stopped and the scorecards are tallied.
Technical Draw: When a bout is stopped early and the scores are even.
Technical Knockout: This is also called a TKO and is when a fighter is getting hit too much, has been dropped repeatedly and the referee stops the contest before it has gone the predetermined distance.
Trial Horse: This refers to a fighter who is used as a test for an up-and-coming fighter to gauge his ability or readiness to step-up in class. A “trial horse” is usually a tough, durable fighter who will fight back, but poses no real threat to win. (Not to be confused with Gatekeeper; Orlando Salido was meant to be Lomachenko's Trial Horse.)
Unanimous Decision: When all three judges agree and score the bout for one fighter.
Uppercut: A punch thrown in an upward fashion, up the middle of a fighters guard intended to make impact on the point of his chin. It is delivered from a crouched position, with your hands up and, as you twist your upper torso, you extend your hand out and up slightly to make contact. This can be thrown with either hand.
Upstart: A beginning fighter who shows potential.
Walkout Bout: Oftentimes, these are fights scheduled as “filler” and when the main bouts end early, they are tacked on at the end of the card to make the fight card last longer.
White Collar Boxing: When business professionals or men and women who have white collar professions train and box on an amateur level. Most have had little or no previous boxing experience.
