noisy talk
"The noisy chatter from the crowded cafeteria made it impossible to hear my friend over the din."
the rapid series of noises made by the parts of a machine
"The loose gears began to chatter violently as the engine revved up."
the high-pitched continuing noise made by animals (birds or monkeys)
"The morning broke under a sky filled with the cheerful chatter of thousands of sparrows in the oak trees."
Talk, especially meaningless or unimportant talk.
"The office gossip was just a harmless chatter who loved to share everyone's secrets over lunch."
One who chats.
cut unevenly with a chattering tool
"The old saw left a jagged, chatter mark across the edge of the oak board that would need sanding down before finishing."
talk socially without exchanging too much information
"the men were sitting in the cafe and shooting the breeze"
To talk idly.
"The children spent the entire afternoon just chatting away while their parents tried to enjoy some quiet time on the porch."