Breadcrumb Home > Dictionary > Index T taillight: Meaning and Definition of Find definitions for: tail•light Pronunciation: (tāl'līt"), [key] — n. a light, usually red, at the rear of an automobile, train, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: taillight (Thesaurus) tailleur tailor ✖ Related Content Daily Word Quiz: centrifugal Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language