rock‧er /ˈrɒkə $ ˈrɑːkər/ noun [countable]

1. American English a rocking chair

2. one of the curved pieces of wood fixed to the bottom of a rocking chair, that allows it to move backwards and forwards if you push it

3. be off your rocker spoken informal to be crazy

4. a member of a group of young people in Britain in the 1960s who wore leather jackets, rode motorcycles, and listened to ROCK ‘N’ ROLL music ⇒ mod, greaser

5. a musician who plays ROCK ‘N’ ROLL music, or someone who likes this kind of music:
ageing rockers

[TahlilGaran] Dictionary of Contemporary English ▲

rocker
ˈrɔkə
See: off one's rocker

[TahlilGaran] English Idioms Dictionary ▲