| Noun | 1. | welterweight - a weight of 28 pounds; sometimes imposed as a handicap in a horse race (such as a steeple chase or hurdle race)weight unit, weight - a unit used to measure weight; "he placed two weights in the scale pan" | |
| 2. | welterweight - an amateur boxer who weighs no more than 148 pounds | |
| 3. | welterweight - a wrestler who weighs 154-172 pounds | |
| 4. | welterweight - a professional boxer who weighs between 141 and 147 pounds | |