Knockout - A ruling by the referee stopping a fight and declaring one boxer the winner if his opponent has been down for a count of 10.
Welterweight - A weight division, with an upper limit of 147 pounds.
Uppercut - An upwards-thrown punch designed to hit an opponent's chin, usually part of a multi-punch combination and best used when a boxer is very close to his opponent.
Counter-punch - A counterattack, begun immediately after an opponent throws a punch, exploiting the opening in the opponent's position.
Neutral Corner - The two corners not assigned to either boxer.
Heavyweight - The highest weight division in boxing, with no upper weight limit.