S: (n) laugh (a facial expression characteristic of a person laughing) "his face wrinkled in a silent laugh of derision"
S: (n) joke, gag, laugh, jest, jape (a humorous anecdote or remark intended to provoke laughter) "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"