clack

noun

1. An abrupt, sharp sound, especially one made by two hard objects colliding repetitively; a sound midway between a click and a clunk.
2. Anything that causes a clacking noise, such as the clapper of a mill, or a clack valve.
3. Chatter; prattle.

   “whose chief intent is to vaunt his spiritual clack”

4. (colloquial)The tongue.

verb

1. (intransitive)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.”

   “[He] walked quite jauntily across the courtyard to the distant door, his sandals clacking against the marble.”

2. (transitive)To cause to make a sudden, sharp noise, or succession of noises; to click.
3. 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”

   “The women bunched up in little droves and let their tongues clack, and the men herded together and passed a jug around and, to tell the truth, let their tongues clack too.”

4. (UK)To cut the sheep's mark off (wool), to make the wool weigh less and thus yield less duty.
5. (alt-of, dated)Dated form of cluck.

   “Only the chickens clacked at the Saturday quiet and fat mouse-minded cats licked whiskers on the empty steps.”

   “We drive on between meadows of mown grass, through a pergola of vines, and so to an orchard of peaches, apples, and pears and a hen colony housed in neat modern cottages, the chickens clacking and scratching away […]”

name

1. A surname.