Definition of "yammer"

yammer

/ˈjæm.ə/

verb
third-person singular simple present yammers, present participle yammering, simple past and past participle yammered
1. (intransitive) To complain peevishly.
2. (intransitive) To talk loudly and persistently.
3. (transitive) To repeat on and on, usually loudly or in complaint.
4. (intransitive, rare) To make an outcry; to clamor.
  Quotations
  It was a ship, but a whale to the Dark Nebula’s minnow; and on its side was the Spaceship-and-Sun of the Empire. Every alarm on the ship yammered hysterically.
  1951, Isaac Asimov, ““The Merchant Princes”, chapter 17”, in Foundation, part V, Panther Books Ltd, published 1974, page 182
5. (intransitive) to repeatedly call someone's name.
noun
uncountable
1. The act or noise of yammering.
  Quotations
  The house is just as he had imagined it would be: rubbishy furniture, a clutter of ornaments (porcelain shepherdesses, cowbells, an ostrich-feather flywhisk), the yammer of the radio, the cheeping of birds in cages, cats everywhere underfoot.
  1999, J. M. Coetzee, chapter 8, in Disgrace, Penguin, published 2000, pages 72–73
2. A loud noise.
  Quotations
  The ungodly scream of Jap wings in the wind, and the blood-chilling snarl and yammer of their aerial machine gun and aerial cannon fire was enough to make the very ground shake and tremble.
  1943, R. Sidney Bown, chapter 12, in Dave Dawson with the Flying Tigers‎, Akron, Ohio: Saalfield Publishing Company
3. One who yammers.