yam•merPronunciation: (yam'ur), [key] Informal.
to whine or complain.
to make an outcry or clamor.
to talk loudly and persistently.
to utter clamorously, persistently, or in complaint: They yammered their complaints until she let them see the movie.
the act or noise of yammering.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.