noun

 

substance the hard, natural substance which forms part of the Earth's surface

a layer of volcanic rock

 

large piece a large piece of rock or stone

 

music loud, modern music with a strong beat, often played with electric guitars and drums

hard/soft rock

 

verb

 

move to move backwards and forwards or from side to side, or to make someone or something do this

She rocked back and forth on her chair.

 

shock to shock a large number of people

The country has been rocked by a series of drug scandals.