n. 1.noisy talk 2.the rapid series of noises made by the parts of a machine 3.the high-pitched continuing noise made by animals (birds or monkeys) chatter v. 1.click repeatedly or uncontrollably 2.cut unevenly with a chattering tool 3.talk socially without exchanging too much information 4.speak (about unimportant matters) rapidly and incessantly 5.make noise as if chattering away