underarm

/AH0 N D ER0 AA1 R M/
noun
  1. 1

    The armpit.

  2. 2

    Old-fashioned and now outlawed style of bowling in which the arm is not swung over the shoulder.

verb
  1. 1

    To supply with insufficient weaponry.

adjective
  1. 1

    For use under the arm.

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