Noun has 2 senses

• hard-shell clam(n = noun.food) quahaug, quahog, round clam - Atlantic coast round clams with hard shells; large clams usually used for chowders or other clam dishes;




• hard-shell clam(n = noun.animal) hard clam, mercenaria mercenaria, quahaug, quahog, round clam, venus mercenaria - an edible American clam; the heavy shells were used as money by some American Indians;