Pronunciation: (klak), [key]
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.
1. to utter by clacking.
2. to cause to clack: He clacked the cup against the saucer.
1. a clacking sound.
2. something that clacks, as a rattle.
3. rapid, continual talk; chatter.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.