sea clam Meaning, Definition & Usage

Sea" clam`
Definitions
  1. (Zoöl.) Any one of the large bivalve mollusks found on the open seacoast, especially those of the family Mactridæ, as the common American species. (Mactra, ∨ Spisula, solidissima); -- called also beach clam, and surf clam.

Webster 1913