/ Dictionary / Index C CPB: Meaning and Definition of Find definitions for: CPB Pronunciation: [key] Corporation for Public Broadcasting. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. C.P.A. CPCU Related Content Daily Word Quiz: rarefied Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language