Definify.com
Webster 1913 Edition
Aaron's rod
Aar′on’s rodˊ
(âr′ŭnz rŏdˊ)
. [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.