Definition of pearl oyster in English English dictionary
Any of several bivalve molluscs that are a source of pearls, but especially Pinctada margaritifera
tropical marine bivalve found chiefly off eastern Asia and Pacific coast of North America and Central America; a major source of pearls
Any of several bivalve marine mollusks of the genus Pinctada and related genera of tropical waters, especially P. margaritifera, a major commercial source of pearls