/ Dictionary / Index L lacunule: Meaning and Definition of Find definitions for: la•cu•nule Pronunciation: (lu-ky'nyl), [key] — n. a small lacuna. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. lacunose Lacus Solis Related Content Daily Word Quiz: slough Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language