1. any of various seashore mollusks having a tapering tubular shell open at each end and a foot pointed like a spade for burrowing; [syn: tooth shell, tusk shell]
WordNet (r) 3.0 (2006):
tusk shell
n 1: any of various seashore mollusks having a tapering tubular
shell open at each end and a foot pointed like a spade for
burrowing [syn: tooth shell, tusk shell]