#1 chatter n. [yak, yack, yakety-yak, cackle] noisy talk. wn
#2 chatter v. [click] click repeatedly or uncontrollably; "Chattering teeth". wn
#3 chatter v. cut unevenly with a chattering tool. wn
#4 chatter v. [chew the fat, shoot the breeze, chat, confabulate, confab, chitchat, chit-chat, chaffer, natter, gossip, jaw, claver, visit] talk socially without exchanging too much information; "the men were sitting in the cafe and shooting the breeze". wn
#5 chatter v. [piffle, palaver, prate, tittle-tattle, twaddle, clack, maunder, prattle, blab, gibber, tattle, blabber, gabble] speak (about unimportant matters) rapidly and incessantly. wn
vizzz