Clack
 

clack
noun1.a sharp abrupt noise as if two objects hit together; may be repeated2.a simple valve with a hinge on one side; allows fluid to flow in only one direction[syn: clack valve]
verb1.make a rattling sound; "clattering dishes"[syn: clatter]2.make a clucking sounds, characteristic of hens[syn: cluck]3.speak (about unimportant matters) rapidly and incessantly