bantam

/B AE1 N T AH0 M/
noun
  1. 1

    Any of several small chickens, especially of a breed that is a miniature version of another breed.

  2. 2

    A competitor in an age division between peewee and midget.

adjective
  1. 1

    Small or miniature.

  2. 2

    Spirited or aggressive.

Source: https://en.wiktionary.org/wiki/bantam