- a boxer or other contestant intermediate in weight between a flyweight and a featherweight, especially a professional boxer weighing up to 118 pounds.
- a professional boxer weighing 112–118 pounds (51–53.5 kg)
- an amateur boxer weighing 51–54 kg (112–119 pounds)
- (as modifier)the bantamweight champion
- a wrestler in a similar weight category (usually 115–126 pounds (52–57 kg))