"rocker" in the noun sense
1. rocker
an attendant who rocks a child in a cradle
2. rocker, rock 'n' roll musician
a performer or composer or fan of rock music
3. rocker
a teenager or young adult in the 1960s who wore leather jackets and rode motorcycles
4. rocking chair, rocker
a chair mounted on rockers
5. rocker, cradle
a trough that can be rocked back and forth used by gold miners to shake auriferous earth in water in order to separate the gold
6. rocker
an ice skate with a curved blade
7. rocker
a curved support that permits the supported object to rock to and fro
Source: WordNet® (An amazing lexical database of English)
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