rock
/rɑk/ n [C/U] (STONE)Definition
› a large mass of stone that sticks up out of the ground or the sea, or a separate piece of stone: [U] This is some of the oldest rock on the earth’s surface. [C] Waves crashed against the rocks. [C] Bees poured into the neighborhood when boys threw rocks at the hives. › slang A rock is also a diamond or other jewel.
(Definition of rock n (STONE) from the Cambridge Academic Content Dictionary
© Cambridge University Press)
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