Aar·on's rod
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.
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Aaron's rod
n : tall-stalked very woolly mullein with densely packed yellow
flowers; ancient Greeks and Romans dipped the stalks in
tallow for funeral torches [syn: common mullein, great
mullein, flannel mullein, woolly mullein, torch, Verbascum
thapsus]