/ Dictionary / Index L lummox: Meaning and Definition of Find definitions for: lum•mox Pronunciation: (lum'uks), [key] — n. Informal. a clumsy, stupid person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lummox (Thesaurus) lummix lump Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language