/ Dictionary / Index S sypher: Meaning and Definition of Find definitions for: sy•pher Pronunciation: (sī'fur), [key] — v.t. to join (boards having beveled edges) so as to make a flush surface. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. syph syphilis Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language