greaser

noun

1. a person or thing that greases
2. ☆ Slang a poor or working-class youth, esp. in the 1950s, often characterized as being rough in manner, wearing a leather jacket, having oily hair, riding a motorcycle, etc.: usually a somewhat derogatory term
3. Slang a person of Latin American, specif. Mexican, origin: a term of contempt or hostility