/ Dictionary / Index C Civil Aeronautics Board: Meaning and Definition of Find definitions for: Civ'il Aeronaut'ics Board" Pronunciation: [key] — U.S. Govt. U.S. Govt. the former federal agency (1938–85) that regulated airline fares and assigned routes. Abbr.: CAB, C.A.B. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. civil Civil Air Patrol Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language