/ Dictionary / Index V vac: Meaning and Definition of Find definitions for: vac Pronunciation: (vak), [key] — n. Informal. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vac (Thesaurus) Vaasa vacancy Related Content Daily Word Quiz: banshee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language