Clack

klak, v. i. [clacked (klakt), clacking make a sudden, sharp noise, as by striking or cracking; to clink, click; to talk rapidly and continually. — v. t. To cause to make a sudden noise; to clink; utter rapidly and inconsiderately. — n. A sharp, abrupt sound made by striking; anything that causes a clacking noise; continual talk; prattle; prating.