/ Dictionary / Index S sylph: Meaning and Definition of Find definitions for: sylph Pronunciation: (silf), [key] a slender, graceful woman or girl. (in folklore) one of a race of supernatural beings supposed to inhabit the air. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sylph (Thesaurus) syllogize sylphid Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language