Definitions for "Aaron's rod"
Keywords:  mullein, serpent, rod, caduceus, tallow
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.
tall-stalked very woolly mullein with densely packed yellow flowers; ancient Greeks and Romans dipped the stalks in tallow for funeral torches