'Caduceus' definitions:

Definition of 'caduceus'

(from WordNet)
noun
An insignia used by the medical profession; modeled after the staff of Hermes

Definition of 'Caduceus'

From: GCIDE
  • Caduceus \Ca*du"ce*us\, n. [L. caduceum, caduceus; akin to Gr. ? a herald's wand, fr. ? herald.] (Myth.) The official staff or wand of Hermes or Mercury, the messenger of the gods. It was originally said to be a herald's staff of olive wood, but was afterwards fabled to have two serpents coiled about it, and two wings at the top. [1913 Webster]