intransitive verb
Definition: To make sounds that show happiness or amusement, often by opening the mouth and making a series of short, quick sounds.
Example: The children laughed at the funny clown.
noun
Definition: A sound made when someone laughs, often showing happiness or amusement.
Example: Her laugh was so contagious that everyone around her started smiling.
transitive verb
Definition: To make a sound of amusement or joy, often by expressing happiness or finding something funny.
Example: She laughed at the joke he told.