piddock
/ˈpɪdək/noun
1- a bivalve mollusc which bores into soft rock or other firm surfaces. The valves of the shell have a conspicuous gap between them and rough frontal ridges to aid in boring海笋。
1.1
- Pholas and other genera, family Pholadidae.海笋属及其他属, 海笋科。
词源
mid 19th cent.: of unknown origin.