Verb (used without object) : He laughed inwardly at the scene. ,A coyote laughed in the dark.    From Dictionary.com. 

Verb (used with object) : They laughed him out of town. We laughed away our troubles. ,He laughed his consent.    From Dictionary.com. 

Noun : After all the advance publicity, the prizefight turned out to be a laugh.    From Dictionary.com.