D defs.my
Entry 2 senses Webster, 1913

Greaser

/grēs'-ẽr/ · Greas·er · IPA /ɡrˈiːsər/
01 n. One who, or that which, greases; specifically, a person employed to lubricate the working parts of machinery, engines, carriages, etc.
  1. 1.
    One who, or that which, greases; specifically, a person employed to lubricate the working parts of machinery, engines, carriages, etc.
  2. 2.
    A nickname sometimes applied in contempt to a Mexican or other Latin-American of the lowest type; -- derogatory and offensive.[Low, U. S.]