Bible Dictionaries
Aaron's Rod

Webster's Dictionary

(1):

A rod with one serpent twined around it, thus differing from the caduceus of Mercury, which has two.

(2):

A plant with a tall flowering stem; esp. the great mullein, or hag-taper, and the golden-rod.

Bibliography Information
Webster, Noah. Entry for 'Aaron's Rod'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​a/aarons-rod.html. 1828.