F0 [C or U] a small, round object, usually white, that forms around a grain of sand inside the shell of a sea creature, especially an oyster. Pearls are valuable and are used to make jewellery:

F0 jewellery made from pearls:

F0 [C] an artificially made pearl:

F0 [C] _LITERARY a small drop of liquid:

F0 [U] the white shiny colour of pearl or a pale colour

F0 [U] → MOTHER-OF-PEARL(Cf. ↑mother-of-pearl):