Pronunciation: (klak),[key] —v.i. 1. to make a quick, sharp sound, or a succession of such sounds, as by striking or cracking: The loom clacked busily under her expert hands. 2. to talk rapidly and continually or with sharpness and abruptness; chatter.
3. to cluck or cackle.
—v.t. 1. to utter by clacking.
2. to cause to clack: He clacked the cup against the saucer.
—n. 1. a clacking sound.
2. something that clacks, as a rattle.
3. rapid, continual talk; chatter.