'beach clam' definitions:

Definition of 'beach clam'

From: GCIDE
  • Sea clam \Sea" clam`\ (Zool.) Any one of the large bivalve mollusks found on the open seacoast, especially those of the family Mactridae, as the common American species. (Mactra solidissima or {Spisula solidissima}); -- called also beach clam, and surf clam. [1913 Webster]