Definitions
1.verbTo show mirth, satisfaction, or derision, by peculiar movement of the muscles of the face, particularly of the mouth, causing a lighting up of the face and eyes, and usually accompanied by the emission of explosive or chuckling sounds from the chest and throat; to indulge in laughter."There were many laughing children running on the school grounds."
2.verbTo be or appear cheerful, pleasant, mirthful, lively, or brilliant; to sparkle; to sport.
3.verb(followed by "at") To make an object of laughter or ridicule; to make fun of; to deride; to mock."Don't laugh at my new hat, man!"
4.verbTo affect or influence by means of laughter or ridicule.
5.verbTo express by, or utter with, laughter.
6.nounThe action of the verb to laugh.