WordNet (r) 3.0 (2006):

stickpin
    n 1: a decorative pin that is worn in a necktie

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "stickpin":
   anklet, armlet, bangle, beads, bijou, bracelet, breastpin, brooch,
   chain, chaplet, charm, chatelaine, circle, coronet, crown, diadem,
   earring, fob, gem, jewel, locket, necklace, nose ring, pin,
   precious stone, rhinestone, ring, stone, tiara, torque, wampum,
   wristband, wristlet