[ See Exodus vii. 9 and Numbers xvii. 8 ] 1. (Arch.) A rod with one serpent twined around it, thus differing from the caduceus of Mercury, which has two. [ 1913 Webster ]
2. (Bot.) A plant with a tall flowering stem; esp. the great mullein, or hag-taper, and the golden-rod. [ 1913 Webster ]