Featherweight - A weight division, with an upper limit of 126 pounds.
Hook - A short power punch in which the boxer swings from the shoulder with his elbow bent, bringing his fist from the side toward the center. One of the most technically difficult punches to throw because it requires perfect precision, timing and coordination.
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.
Lightweight - A weight division, with an upper limit of 135 pounds.
No Decision - A bout in which no winner is declared by the judges.
Second - A person other than the coach who stands in a boxer's corner and gives him advice and assistance between rounds.