/ Dictionary / Index L lime sulfur: Meaning and Definition of Find definitions for: lime' sul"fur Pronunciation: [key] — Chem. Chem. a mixture of lime and sulfur that has been boiled in water: used in powdered form or in aqueous solution as an insecticide, a fungicide, and a sheep dip. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. limestone lettuce lime tree Related Content Daily Word Quiz: menagerie Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language