chattering (Noun) — The rapid series of noises made by the parts of a machine.
chattering (Noun) — The high-pitched continuing noise made by animals (birds or monkeys).
chattering (Verb) — Make a clicking sound repeatedly or uncontrollably. ex. "Chattering teeth"
chattering (Verb) — Cut unevenly with a chattering tool.
chattering (Verb) — Talk socially without exchanging too much information. ex. "the men were sitting in the cafe and chattering"
chattering (Verb) — Speak (about unimportant matters) rapidly and incessantly.
chattering (Verb) — Make noise as if chattering away. ex. "The magpies were chattering in the trees"