scallop shell(n = noun.animal) - a shell of a scallop;
is a kind of shell

argus shell, ark shell, artillery shell, band shell, bay scallop, blank shell, boat shell, bubble shell, coat-of-mail shell, electron shell, gas shell, giant scallop, goroon shell, ioqua shell, lamp shell, maara shell, mask shell, moon shell, oyster shell, patty shell, pie shell, racing shell, scallop, scorpion shell, sea scallop, shell, shell bean, shell bean plant, shell collecting, shell corporation, shell entity, shell game, shell ginger, shell jacket, shell out, shell parakeet, shell plating, shell shock, shell stitch, shotgun shell, single shell, star shell, sugar shell, tank shell, tooth shell, torpedo shell, tortoise shell, tusk shell, whizbang shell