greaser

[ gree-ser ]
/ ˈgri sər /

noun

a person or thing that greases.
Slang: Extremely Disparaging and Offensive. a contemptuous term used to refer to a Latin American, especially a Mexican.
Slang. a swaggering young tough, especially a member of a street gang.

Origin of greaser

First recorded in 1635–45; grease + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for greaser

greaser
/ (ˈɡriːzə, ˈɡriːsə) /

noun British slang

a mechanic, esp of motor vehicles
a semiskilled engine attendant aboard a merchant ship
a young long-haired motorcyclist, usually one of a gang
an unpleasant person, esp one who ingratiates himself with superiors
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012