Noun

(wikipedia laughter) (en-noun)

The sound of laughing, produced by air so expelled; any similar sound.

*{{quote-book, year=1899, author=(Stephen Crane)

, title=, chapter=1 , passage=There was some laughter , and Roddle was left free to expand his ideas on the periodic visits of cowboys to the town.}}

A movement (usually involuntary) of the muscles of the laughing face, particularly of the lips, and of the whole body, with a peculiar expression of the eyes, indicating merriment, satisfaction or derision, and usually attended by a sonorous and interrupted expulsion of air from the lungs.

* (Thomas Browne) (1605-1682)

The act of laughter , which is a sweet contraction of the muscles of the face, and a pleasant agitation of the vocal organs, is not merely, or totally within the jurisdiction of ourselves.

* (Henry Wadsworth Longfellow) (1807-1882)

Archly the maiden smiled, and with eyes overrunning with laughter .

(label) A reason for merriment.