laugh

noun:a spontaneous vocal sound accompanied by physical movements that expresses amusement or joy
- Her laugh filled the room and made everyone feel lighter.
noun:a derisive or mocking sound, often indicating scorn or disbelief
- She heard a bitter laugh from the opponent after the accusation.
verb:to emit a laugh; to produce the sound and bodily motions of laughing
- The comedian made the audience laugh with his absurd stories.
verb:to react to something with amusement, often reflected in laughter
- He couldn't help but laugh at the puppy's clumsy attempts to jump.
verb:to mock or ridicule someone or something, often expressed through a laugh
- She laughed at his comment, finding it utterly ridiculous.