Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “rock”

rock

noun [C/U] (STONE)   /rɑk/
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 noun (STONE) from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of rock

Browse related topics

You are looking at an entry to do with Jewellery, but you might be interested in these topics from the Personal care topic area:

Definitions of “rock” in other dictionaries

Word of the Day

closeness

the quality of knowing someone very well, liking them a lot, and wanting to spend a lot of time together

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More