0 to smile while making sounds with your voice that show you think something is funny or you are happy:
2 to make the sounds and movements of the face and body that express happiness or amusement, or that sometimes express ridicule or anxiety:
3 the sounds and movements of the face and body that express happiness or amusement, or that sometimes express ridicule or anxiety:
Please don't laugh - I'm being serious.
I could see Emma trying not to laugh and of course that started me off.
She reacted to his compliments with a deprecating laugh.
He's got a really annoying laugh.
The announcement raised a laugh.