Breadcrumb Home > Dictionary > Index T ten-four: Meaning and Definition of Find definitions for: ten-four Pronunciation: (ten'fôr', -fōr'), [key] — interj. CB Radio Slang. (used to express affirmation or confirmation). Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tenfold ten-gallon hat TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: praedial Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language