0 to smile and make sounds with your voice because something is funny -- （人）が笑う
You never laugh at my jokes.
She really makes me laugh.
1 the action of smiling and making sounds with your voice because something is funny -- 笑い（声）
He gave a nervous laugh.
At the time I was embarrassed, but I had a good laugh (= laughed a lot) about it later.
2 If you do something for a laugh, you do it because it will be funny. -- 冗談で
