Any bivalve shell of the genus Mactra.

Dated form of shellac.

plural of shell-lac

Alternative form of shellpad

A pad made or consisting of shells.

A bivalve shell, or its inhabitant, of the genus Pholas, and allied genera.

Any of various species of marine bivalve shells formerly belonging to the no longer accepted genus Avicula, now a synonym of Pteria, with species assigned to several genera, in which the hinge border projects like a wing.

(zoology) A brachiopod (Brachiopoda).

Any of the marine gastropod mollusks of the genus Fasciolaria, especially Fasciolaria tulipa.

A cowrie.