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  1.                 From WordNet dictionary, version 3.0:
                

    
                
                  
    rocker
n. 1. an attendant who rocks a child in a cradle
2. a performer or composer or fan of rock music
Synonyms: rock 'n' roll musician
3. a teenager or young adult in the 1960s who wore leather jackets and rode motorcycles
4. a chair mounted on rockers
Synonyms: rocking chair
5. 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
Synonyms: cradle
6. an ice skate with a curved blade
7. a curved support that permits the supported object to rock to and fro