laugh > define

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

• (v.t.) To express by or utter with, laughter; -- with out.
• (v.i.) To show mirth, satisfaction or derision, by peculiar movement of the muscles of the face, particularly of the mouth, causing a lighting up of the face and eyes, and usually accompanied by the emission of explosive or chuckling sounds from the chest and throat; to indulge in laughter.
• (v.i.) Fig.: To be or appear gay, cheerful, pleasant, mirthful, lively or brilliant; to sparkle; to sport.
• (v.t.) To affect or influence by means of laughter or ridicule.
• (n.) An expression of mirth peculiar to the human species; the sound heard in laughing; laughter. See Laugh, v. i.