/ Dictionary / Index S sign-out: Meaning and Definition of Find definitions for: sign-out Pronunciation: (sīn'out"), [key] — n. an act, instance, or time of signing out. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. signory signpost Related Content Daily Word Quiz: sylvan Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language