What is the meaning of Chatter?

Talk, especially meaningless or unimportant talk.

The sound of talking.

The vocalisations of a Eurasian magpie, Pica pica.

The vocalisations of various birds or other animals.

An intermittent noise, as from vibration.

In national security, the degree of communication between suspect groups and individuals, used to gauge the degree of expected terrorist activity.

The situation where a drill or similar tool vibrates and tears the material rather than cutting it cleanly.

To talk idly.

To make a noise by rapid collisions.

To utter sounds which somewhat resemble language, but are inarticulate and indistinct.

One who chats.

A user of chat rooms.

Alternative form of tchatter

Source: wiktionary.org