Webster's Revised Unabridged Dictionary · 1913

Chatter

Chatter , intransitive verb

[Of imitative origin. Compare Chat, v. i. Chitter.]

1.
To utter sounds which somewhat resemble language, but are inarticulate and indistinct.
The jaw makes answer, as the magpie chatters. — Wordsworth
2.
To talk idly, carelessly, or with undue rapidity; to jabber; to prate.
To tame a shrew, and charm her chattering tongue. — Shakespeare
3.
To make a noise by rapid collisions.
With chattering teeth, and bristling hair upright. — Dryden

Chatter , transitive verb

To utter rapidly, idly, or indistinctly.
Begin his witless note apace to chatter. — Spenser

Chatter , noun

1.
Sounds like those of a magpie or monkey; idle talk; rapid, thoughtless talk; jabber; prattle.
Your words are but idle and empty chatter. — Longfellow
2.
Noise made by collision of the teeth, as in shivering.