Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: ark shell  aa(r)k shel
  1. Marine bivalve mollusk having a heavy toothed shell with a deep boat-like inner surface

Derived forms: ark shells

Type of: bivalve, lamellibranch, pelecypod

Part of: Arca, genus Arca

Encyclopedia: Ark shell