Possible Definitions:
1. Chatter (v. i.) To utter sounds which somewhat resemble language, but are inarticulate and indistinct.
2. Chatter (v. i.) To talk idly, carelessly, or with undue rapidity; to jabber; to prate.
3. Chatter (v. i.) To make a noise by rapid collisions.
4. Chatter (v. t.) To utter rapidly, idly, or indistinctly.
5. Chatter (n.) Sounds like those of a magpie or monkey; idle talk; rapid, thoughtless talk; jabber; prattle.
6. Chatter (n.) Noise made by collision of the teeth, as in shivering.