/ Dictionary / Index L lump of sugar: Meaning and Definition of Find definitions for: lump' of sug'ar Pronunciation: [key] lump (def. 4). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lumpish lumpy Related Content Daily Word Quiz: ounterfeit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language