yapper

Noun

1. A person's mouth, especially one that gossips or talks too much.
   • Shut your yapper or I'll shut it for you!
2. One who yaps.
   • If you want your pack to be a deterrent against burglars or muggers, forget about small dogs, yappers though they be. Focus on the larger breeds, particularly working stock with strong instinctual drives. - 2004,...
   • I have to admit I would have a lot more tolerance for cell phone yappers on my one-hour train ride to and from work if they were actually learning — instead of yelling […] - 2007, Training, volume 44, numbers 1-10, page...
3. Ellipsis of yapper dog
   • If you’ve got a yapper dog, take him somewhere else. - 2011, Goodavage, Maria, The Dog Lover's Companion to California The Inside Scoop on Where to Take Your Dog, page 159:

   Synonyms: yipper