Definition of: chatter

(chat′ər) v.i.
1. To click together rapidly, as the teeth in shivering.
2. To talk rapidly and trivially; blather.
3. To make rapid and indistinct sounds, as a monkey or squirrel.
4. To clatter or vibrate while operating improperly, as a power tool.
—v.t.
5. To utter in a trivial or chattering manner. See synonyms under BABBLE.
—noun
1. Idle prattle.
2. Jabbering, as of a monkey.
3. A rattling of the teeth.
4. The jar or vibration of a chattering tool. [Imit.]