1. an amateur boxer who weighs no more than 165 pounds;
2. a wrestler who weighs 172-192 pounds;
3. a professional boxer who weighs between 155 and 160 pounds;
WordNet (r) 3.0 (2006):
middleweight
n 1: an amateur boxer who weighs no more than 165 pounds
2: a wrestler who weighs 172-192 pounds
3: a professional boxer who weighs between 155 and 160 pounds