#1 pearl n. a smooth lustrous round structure inside the shell of a clam or oyster; much valued as a jewel. wn
#2 pearl n. [bone, ivory, off-white] a shade of white the color of bleached bones. wn
#3 pearl v. gather pearls, from oysters in the ocean. wn
#4 pearl n. [drop, bead] a shape that is spherical and small; "he studied the shapes of low-viscosity drops"; "beads of sweat on his forehead". wn
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