the activity of laughing; the manifestation of joy or mirth or scorn
"he enjoyed the laughter of the crowd"
The sound of laughing, produced by air so expelled; any similar sound.
"The sudden burst of laughter from the crowd echoed loudly through the hall."
In plain English: Laughter is the sound you make when something funny makes you laugh out loud.
"The sudden noise from behind us made everyone burst into laughter."
Usage: Laughter refers to the actual audible sounds made when people laugh rather than the act or feeling itself. Use this noun specifically in contexts describing noise, such as "a burst of laughter," instead of abstract references like "the joy of laughing."
A surname.
"Mr. Laughter opened his speech by introducing himself as a well-known family name in our community."
The word laughter comes from Old English hleahtor, meaning "laughter" or "jubilation." It ultimately traces back to a Proto-Indo-European root related to shouting.