Either sounds of joy or amusement made by a person, or the verb meaning to make such sounds in response to humor.
From Old English 'hlæhhan,' related to Old Norse 'hlakka,' meaning to make an explosive sound of joy or amusement.
Every culture laughs, but how and when people laugh varies wildly—a laugh in Japan might mean embarrassment, while in the U.S. it usually signals genuine joy, proving laughter isn't as universal as we think.
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