RhymeZone: clacking definitions

Definitions of clack:

noun: a sharp abrupt noise as if two objects hit together; may be repeated
noun: a simple valve with a hinge on one side; allows fluid to flow in only one direction
verb: make a rattling sound
verb: make a clucking sounds, characteristic of hens
verb: speak (about unimportant matters) rapidly and incessantly
name: A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #8758)