Definition of: laugh

(laf, läf) v.i
1. To express amusement, hilarity, derision, etc., by expressions of the face and by a series of explosive sounds made in the chest and throat.
2. To be or appear gay or lively.
—v.t.
3. To express by laughter.
4. To move or influence by laughter or ridicule: He laughed himself out of his worries.
—to laugh at
1. To express amusement concerning.
2. To make light of; belittle.
—to laugh away To drive off or away by laughter.
—to laugh in (or up) one's sleeve To be secretly amused although outwardly serious.
—to laugh off To dismiss with a laugh; treat lightly or scornfully.
—to laugh on (or out of) the other (or wrong) side of the mouth To feel sudden disappointment or annoyance after mirth or supposed triumph.
—noun
1. The act or sound of laughter.
2. Colloq. Anything provoking or producing laughter. [OE hlœhhan]
—laugh′er noun