Wing-shell
Pronunciation : Wing"-shell`, n. (Zo?l.) (a) Any one of various species of marine bivalve shells belonging to the genus Avicula
Part of Speech : in
Definition :
which the hinge border projects like a wing. (b) Any marine gastropod shell of the genus Strombus. See Strombus. (c) Any pteropod shell.
Source : Webster's Unabridged Dictionary, 1913