hard-shell clam
n 1: Atlantic coast round clams with hard shells; large clams
usually used for chowders or other clam dishes [syn: {quahaug},
{quahog}, {round clam}]
2: an edible American clam [syn: {quahog}, {quahaug}, {round
clam}, {Venus mercenaria}, {Mercenaria mercenaria}]