1. talked rapidly and continuously in a light or trivial way
2. made rapid clicking or rattling sounds
3. shook or knocked together rapidly due to cold or fear
Usage: often refers to teeth

Examples

• The children chattered excitedly about their field trip.
• She chattered nervously while waiting for the interview.
• The monkeys chattered in the trees above us.
• His teeth chattered from the cold wind.
• The typewriter keys chattered as she worked.
• The birds chattered at dawn in the garden.