Chuckle

1. v. i. To laugh in a suppressed or broken manner, as expressing inward satisfaction, exultation, or derision.
2. v. t. To call, as a hen her chickens; to cluck.
3. v. t. To fondle; to cocker.
4. n. A short, suppressed laugh; the expression of satisfaction, exultation, or derision.

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.