Main entry: clack, clack valve, clapper valve
Definition: a simple valve with a hinge on one side; allows fluid to flow in only one direction
Definition: a sharp abrupt noise as if two objects hit together; may be repeated
Main entry: clack, chatter, prate, prattle, piffle, palaver, gabble, gibber, blab, blabber, maunder, tattle, tittle-tattle, twaddle
Definition: speak (about unimportant matters) rapidly and incessantly
Main entry: clack, click, cluck
Definition: make a clucking sounds, characteristic of hens
Main entry: clack, clatter, brattle
Definition: make a rattling sound
Usage: clattering dishes