/ Dictionary / Index S sign manual: Meaning and Definition of Find definitions for: sign' man'ual Pronunciation: [key] — pl. signs manual. a personal signature, esp. that of a sovereign or official on a public document. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sign language sign of aggregation Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language