/ Dictionary / Index H Hercules-club: Meaning and Definition of Find definitions for: Her•cu•les-club Pronunciation: (hûr'kyu-lēz-klub"), [key] — n. a prickly tree, Zanthoxylum clava-herculis, of the rue family, having a medicinal bark and berries. Also calleda prickly shrub, of the ginseng family, Aralia spinosa, having a medicinal bark and root. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hercules-club (Thesaurus) Hercules beetle Hercules' Pillars Related Content Daily Word Quiz: ablution Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language