/ Dictionary / Index C commuter tax: Meaning and Definition of Find definitions for: commut'er tax" Pronunciation: [key] an income tax imposed by a locality on those who work within its boundaries but reside elsewhere. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. commuter marriage commutual Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language