/ Dictionary / Index S sales tax: Meaning and Definition of Find definitions for: sales' tax" Pronunciation: [key] a tax on receipts from sales, usually added to the selling price by the seller. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sales talk saleswoman Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language