Definition of "chatterbox" [chatterbox]

• An extremely talkative person. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As for her calling me "chatterbox" -- she always calls me that when she's been doing all the talking."
• "As for her calling me "chatterbox" -- she always calls me that when _she's_ been doing all the talking."
• "Harold started keeping his own counsel more than before, and he was never what you might call a chatterbox."