a very large, but harmless, bacterium, Thiomargarita namibiensis, that grows as a string of white beads large enough to be visible to the naked eye in the coastal sediments of Namibia

The pearl oyster.

Any of several bivalve molluscs that are a source of pearls, but especially Pinctada margaritifera.

Alternative form of mother-of-pearl

A small edible ball made primarily from tapioca starch; used in bubble tea.

Used other than figuratively or idiomatically: see pearl, necklace. / (vulgar, slang) A sexual act whereby semen is ejaculated onto a partner's neck.

Alternative form of pearl necklace

Barley that has had the husk and bran removed.

A gray-white powder, having chemical properties of quicklime, made by heating mollusk shells to a temperature sufficient to calcine the material.

plural of pearl of wisdom