Definitions
1.nounTalk, especially meaningless or unimportant talk.
2.nounThe sound of talking.
3.nounThe sound made by a magpie.
4.nounAn intermittent noise, as from vibration."Proper brake adjustment will help to reduce the chatter."
5.nounIn national security, the degree of communication between suspect groups and individuals, used to gauge the degree of expected terrorist activity.
6.verbTo talk idly."They knitted and chattered the whole time."
7.verbOf teeth, machinery, etc, to make a noise by rapid collisions."He was so cold that his teeth were chattering."
8.verbTo utter sounds which somewhat resemble language, but are inarticulate and indistinct.