/ Dictionary / Index L lancetfish: Meaning and Definition of Find definitions for: lan•cet•fish Pronunciation: (lan'sit-fish", län'-), [key] — pl. -fish, -fish•es. any large, marine fish of the genus Alepisaurus, having daggerlike teeth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lancetfish (Thesaurus) lanceted lancet window 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