Noun
A rod with one serpent twined around it, thus differing from the caduceus of Mercury, which has two.
A plant with a tall flowering stem; esp. the great mullein, or hag-taper, and the golden-rod.
Source: Webster's dictionaryAaron's rod, however, is cited twice as exhibiting miraculous power on its own, when not physically in the grasp of its owner. Source: Internet
The next morning, Aaron's rod was found to have budded and blossomed and produced ripe almonds (Numbers 17:23). Source: Internet