Bantamweight (noun)

1. A weight class in boxing, wrestling and other sports for competitors who weigh between 118 and 122 pounds.
2. A weight category in sports, typically for athletes weighing between 118 and 122 pounds.

Origin:

Bantam (a small variety of domestic fowl) + weight.

Examples:

1. He fought in the bantamweight division.
2. The bantamweight champion defended his title.
3. The bantamweight boxer was known for his quickness and agility.
4. He was a bantamweight wrestler.
5. The bantamweight match was the highlight of the event.