Cluck

1. n. A click. See 3d Click, 2.
2. v. i. To make the noise, or utter the call, of a brooding hen.
3. v. t. To call together, or call to follow, as a hen does her chickens.
4. n. The call of a hen to her chickens.

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.