Definition of Hercules-club in US English:

Hercules-club

noun

  • Either of two tall prickly shrubs or small trees of the US.

    the southern prickly-ash (Zanthoxylum clava-herculis, family Rutaceae), a tree of the rue family with knobby, corky protrusions on its trunk

    the devil's walking stick (Aralia spinosa, family Araliaceae), a tree of the ginseng family, with large leaves and black berries. Also called angelica tree

    • ‘Here and there is the large-leaved, prickly stemmed Hercules' club, also known as the devil's walking-stick.’