/ Dictionary / Index C chatterbox: Meaning and Definition of Find definitions for: chat•ter•box Pronunciation: (chat'ur boks"), [key] — n. an excessively talkative person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: chatterbox (Thesaurus) chatter chatterer Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language