Showing results for ark shell. Search instead for murex shell.

ark shell

American

noun

any marine bivalve of the family Arcidae, especially of the genus Arca, characterized by a heavy shell with a toothed hinge and a deep, boatlike inner surface.

First recorded in 1850–55

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023