Aar"on's rod` (#). [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.
2. Bot.
A plant with a tall flowering stem; esp. the great mullein, or hag-taper, and the golden-rod.
© Webster 1913.