Толковый словарь английского языка Oxford English Reference - middleweight

n. 1 a weight in certain sports intermediate between welterweight and light heavyweight, in the amateur boxing scale 71-5 kg but differing for professionals, wrestlers, and weightlifters. 2 a sportsman of this weight. Phrases and idioms junior middleweight 1 a weight in professional boxing of 66.7-69.8 kg. 2 a professional boxer of this weight. light middleweight 1 a weight in amateur boxing of 67-71 kg. 2 an amateur boxer of this weight.