flapjaw

flapjaw

1. Someone prone to talking a lot or at length. Good luck getting out of here—Aunt Louise is a real flapjaw and could easily blather to you for an hour.
2. Someone who too readily shares information, especially that which is private or confidential. Some flapjaw has been talking to the press about our new product. Needless to say, if I find out who it is, they will be fired on the spot. If you've got a secret, don't tell it to a flapjaw like Marty!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

flapjaw

(ˈflæpdʒɔ)
1. n. a talkative person. Martin is anything but a flapjaw. I bet he doesn’t say a dozen words per hour.
2. n. chatter; gossip. Too much flapjaw for me to concentrate in here.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
After Steven Spielberg and Kate Capshaw's oceanfront Malibu residence popped up as a summer rental over the past couple of years at a rate of up to $150,000 per month, we now hear from real estate insider Fanny Flapjaw that the couple have made a surreptitious, off-market agreement to sell the home to an unknown buyer for somewhere around $35 million.
by a blizzard of bad writing, running from the old flapjaw tourist-board