Synonyms for Steamer Clam (same or very similar meaning)
WordNet sense 1 (a clam that is usually steamed in the shell):
steamer, soft-shell clam, long-neck clamWordNet sense 2 (an edible clam with thin oval-shaped shell found in coastal regions of the United States and Europe):
Mya arenariaFrom the ODE community, based on WordNetadd/edit