/ Dictionary / Index S sennight: Meaning and Definition of Find definitions for: sen•night Pronunciation: (sen'īt, -it), [key] — n. Archaic. a week. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sennett sennit Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language