/ Dictionary / Index G grease monkey: Meaning and Definition of Find definitions for: grease' mon"key Pronunciation: [key] — Slang. Slang. a mechanic, esp. one who works on automobiles or airplanes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. grease gun grease paint Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language