chatter

Short definition from Wiktionary

Noun

1. 1
   Talk, especially meaningless or unimportant talk.
2. 2
   The sound of talking.
3. 3
   The vocalisations of a Eurasian magpie, Pica pica.
4. 4
   The vocalisations of various birds or other animals.
5. 5
   An intermittent noise, as from vibration.
6. 6
   In national security, the degree of communication between suspect groups and individuals, used to gauge the degree of expected terrorist activity.
7. 7
   The situation where a drill or similar tool vibrates and tears the material rather than cutting it cleanly.
8. 8
   One who chats.
9. 9
   A user of chat rooms.

Verb

1. 1
   To talk idly.
2. 2
   To make a noise by rapid collisions.
3. 3
   To utter sounds which somewhat resemble language, but are inarticulate and indistinct.