What is the meaning of laugh?

noun

• The sound of laughing.
  • synonyms: laughter
• A facial expression characteristic of a person laughing.
  • usage: "his face wrinkled in a silent laugh of derision"
• A humorous anecdote or remark intended to provoke laughter.
  • usage: "he told a very funny joke"; "he knows a million gags"; "thanks for the laugh"; "he laughed unpleasantly at his own jest"; "even a schoolboy's jape is supposed to have some ascertainable point"
  • synonyms: joke, gag, jest, jape

verb

• Produce laughter.
  • synonyms: express joy, express mirth