What is the meaing of this word a shellfish with two hinged shells?

The Word refers to "bivalve," which is a type of shellfish characterized by having two hinged shells, or valves, that protect its soft body. Common examples of bivalves include clams, oysters, and mussels. They typically live in aquatic environments and are known for their ecological role as filter feeders. Bivalves are also significant in various culinary traditions and are often harvested for food.