chatter

chatter (away) (at someone or something)

1. Lit. to talk incessantly or noisily to or at someone or something. The parrot was chattering away at its reflection in the mirror. The kids were chattering away, Stop chattering at me!

2. Fig. [for a small animal, such as a squirrel] to try to scare off someone or something. The little squirrel chattered away at the crow. The crow came close and the squirrel chattered away again.

chatter about someone or something

to talk idly and actively about someone or something. All the guests were chattering about something or other. People are chattering about you and Claire. Do you want to know what they are saying?

chatter from something

[for one's teeth] to shake noisily with a chill from the cold, the dampness, a fever, etc. My teeth were chattering from the extreme cold. It was a terrible illness. My teeth chattered from the chills that followed the fever.

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the chattering classes  (British humorous)

educated people who like to discuss and give their opinions about political and social matters Football has recently become a trendy topic among the chattering classes.