rocker

Definition (noun): an attendant who rocks a child in a cradle

Definition (noun): a performer or composer or fan of rock music

Definition (noun): a teenager or young adult in the 1960s who wore leather jackets and rode motorcycles

Definition (noun): a chair mounted on rockers

Definition (noun): 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

Definition (noun): an ice skate with a curved blade

Definition (noun): a curved support that permits the supported object to rock to and fro