/ Dictionary / Index S seignior: Meaning and Definition of Find definitions for: seign•ior Pronunciation: (sēn'yur), [key] — n. a lord, esp. a feudal lord; ruler. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: seignior (Thesaurus) seigneury seigniorage Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language