Her·cu·les'-club /ˈhɝkjəˌlizˌklʌb/
  Hercules'-club, Hercules'-club, Hercules-club prop. n.
  1. Bot. A densely spiny ornamental tree (Zanthoxylum clava-herculis) of the rue family, growing in southeast U. S. and West Indies. [wns=1] 
  Note: It belongs to the same genus as one of the trees (Zanthoxylum Americanum) called prickly ash.
  Syn: -- Hercules'-clubs, Hercules-club, Zanthoxylum clava-herculis.
  2. A small, prickly, deciduous clump-forming tree or shrub (Aralia spinosa) of eastern U.S.; also called Angelica tree and prickly ash. [wns=2]
  Syn: -- American angelica tree, devil's walking stick, Aralia spinosa.
  3. A variety of the common gourd (Lagenaria vulgaris). Its fruit sometimes exceeds five feet in length.
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  Hercules'-club
       n 1: densely spiny ornamental of southeastern United States and
            West Indies [syn: Hercules'-clubs, Hercules-club, Zanthoxylum
            clava-herculis]
       2: small deciduous clump-forming tree or shrub of eastern
          United States [syn: American angelica tree, devil's
          walking stick, Aralia spinosa]
  Hercules-club
       n : densely spiny ornamental of southeastern United States and
           West Indies [syn: Hercules'-club, Hercules'-clubs, Zanthoxylum
           clava-herculis]