/ Dictionary / Index S sleepover: Meaning and Definition of Find definitions for: sleep•o•ver Pronunciation: (slēp'ō"vur), [key] — n. an instance of sleeping over, as at another person's house. a person who sleeps over. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sleepover (Thesaurus) sleep-out sleep shade Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language