laughˈter noun

The act or sound of laughing

laughˈworthy adjective

Deserving to be laughed at

laughˈy adjective (rare)

Inclined to laugh

laugh and lie down or laugh and lay down noun

An old card game in which a player lays down his or her cards when a winning hand is achieved

laughing gas noun

Nitrous oxide, which may excite laughter when breathed

laughing gear noun (slang, orig Aust)

The mouth

laughing hyena noun

The spotted hyena (Crocuta crocuta; see under hyena)

laughing jackass noun

The kookaburra

laughing stock noun

An object of ridicule

laugh track or laughter track noun

Recorded laughter edited into the soundtrack of a TV comedy programme

be laughing (informal)

1. To have no (further) problems, worries, etc
2. To be in a favourable or advantageous position

don't make me laugh (informal)

An expression of scornful disbelief

have the last laugh

1. To triumph finally after one or more setbacks or defeats
2. To have one's actions, etc finally vindicated after being scorned

have the laugh of

To get the better of

laugh in someone's face

To scorn or mock a person openly

laugh off

To treat (injuries, etc) as of no importance

laugh on the other side of one's face or (rare) on the wrong side of one's mouth

To be made to feel disappointment or sorrow, esp after boasting, etc

laugh someone out of court

To prevent someone getting a hearing by ridicule

laugh to scorn

To deride or jeer at

laugh up one's sleeve or (rare) in one's sleeve

To laugh inwardly

no laughing matter

A very serious matter