hard clam

Definitions of hard clam
  1. noun
    an edible American clam; the heavy shells were used as money by some American Indians
    synonyms: Mercenaria mercenaria, Venus mercenaria, hard-shell clam, quahaug, quahog, round clam
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    littleneck, littleneck clam
    a young quahog
    cherrystone, cherrystone clam
    a half-grown quahog
    type of:
    burrowing marine mollusk living on sand or mud; the shell closes with viselike firmness
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