bulb n

L. < Gk. 'onion, bulbous root'.

  1. Root ball; plant node; underground organic structure; round mass from which flowers rise and bloom; subterranean vegetation nugget that sprouts in the spring; [fig.] physical body in the resurrection.
  2. Cell; vital organ; essential body part; [fig.] tone; note; strain; tune; melody; phrase of a song; musical instrument.