- a boxer or other contestant intermediate in weight between a welterweight and a light heavyweight, especially a professional boxer weighing up to 160 pounds (72.5 kilograms).
- of or relating to middleweights: the middleweight division.
- (of a horse, especially a hunter) able to carry up to 185 pounds (83.9 kilograms).
- a professional boxer weighing 154–160 pounds (70–72.5 kg)
- an amateur boxer weighing 71–75 kg (157–165 pounds)
- (as modifier)
- a wrestler in a similar weight category (usually 172–192 pounds (78–87 kg))
