carcanet

n. [ Dim. fr. F. carcan the iron collar or chain of a criminal, a chain of precious stones, LL. carcannum, fr. Armor. kerchen bosom, neck, kelchen collar, fr. kelch circle; or Icel. kverk troat, OHG. querca throat. ] A jeweled chain, necklace, or collar. [ Also written carkanet and carcant. ] Shak. [ 1913 Webster ]