clack /klæk/noun 4verb 5forms 3 noun4 •An abrupt, sharp sound, especially one made by two hard objects colliding repetitively; a sound midway between a click and a clunk. •Chatter; prattle.whose chief intent is to vaunt his spiritual clack — 1692 •Anything that causes a clacking noise, such as the clapper of a mill, or a clack valve. •(informal) The tongue. verb5 •To make a sudden, sharp noise, or succession of noises; to click.We heard Mr. Hodson's whip clacking on the shoulders of the poor little wretches. — 1847 •To cause to make a sudden, sharp noise, or succession of noises; to click. •To chatter or babble; to utter rapidly without consideration.There is a generation of men, whose unweighed custome makes them clack out any thing their heedless fancy springs — 1623 •(old-fashioned) Dated form of cluck.Only the chickens clacked at the Saturday quiet and fat mouse-minded cats licked whiskers on the empty steps. — 1934 •(UK) To cut the sheep's mark off (wool), to make the wool weigh less and thus yield less duty. formsclacked · clacking · clacks
