/ Dictionary / Index L lase: Meaning and Definition of Find definitions for: lase Pronunciation: (lāz), [key] — lased, las•ing. to give off coherent light, as in a laser. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Las Cruces laser 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