Clack

1. v. t. Continual or importunate talk; prattle; prating.
2. n. To make a sudden, sharp noise, or a succesion of such noises, as by striking an object, or by collision of parts; to rattle; to click.
3. n. To utter words rapidly and continually, or with abruptness; to let the tongue run.
4. v. t. To cause to make a sudden, sharp noise, or succession of noises; to click.
5. v. t. To utter rapidly and inconsiderately.
6. v. t. A sharp, abrupt noise, or succession of noises, made by striking an object.
7. v. t. Anything that causes a clacking noise, as the clapper of a mill, or a clack valve.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.