What is the meaning of Bivalve?

Any mollusc belonging to the taxonomic class Bivalvia, characterized by a shell consisting of two hinged sections, such as a scallop, clam, mussel or oyster.

A pericarp in which the seedcase opens or splits into two parts or valves.

bivalve

bivalve

bivalve (any mollusc in the class Bivalvia)

Source: wiktionary.org