'Surf clam' definitions:

Definition of 'Surf clam'

From: GCIDE
  • Surf \Surf\, n. [Formerly spelled suffe, and probably the same word as E. sough.] The swell of the sea which breaks upon the shore, esp. upon a sloping beach. [1913 Webster]
  • Surf bird (Zool.), a ploverlike bird of the genus Aphriza, allied to the turnstone.
  • Surf clam (Zool.), a large clam living on the open coast, especially Mactra solidissima (syn. {Spisula solidissima}). See Mactra.
  • Surf duck (Zool.), any one of several species of sea ducks of the genus Oidemia, especially {Oidemia percpicillata}; -- called also surf scoter. See the Note under Scoter.
  • Surf fish (Zool.), any one of numerous species of California embiotocoid fishes. See Embiotocoid.
  • Surf smelt. (Zool.) See Smelt.
  • Surf whiting. (Zool.) See under Whiting. [1913 Webster]

Definition of 'surf 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]