| 释义 |
pearl oyster
noun
: any of several large marine bivalve mollusks of the genera Avicula and Pinctada (especially P. margaritifera) that often produce pearls, differ from the ordinary oyster in having a byssus, and are found chiefly in the East Indies (as at Ceylon), in the Persian gulf, on the northern coasts of Australia, and on the Pacific coast of America |