chatter
chat.ter \'chat-*r\ vb [ME chatteren, of imit. origin] 1: to utter rapidly succeeding sounds somewhat like language but inarticul ate and indistinct {squirrels ~ed angrily} {a ~ing stream} 2: to talk idly, incessantly, or fast : JABBER 3a: to click repeatedly or uncontrollably {~ing teeth} of a tool 3b: to vibrate rapidly in cutting 1: to utter rapidly, idly, or indistinctly dial Eng 2: TEAR, SHATTER 3: to cut unevenly with a chattering tool - chatter n