Either
3.One who has been tricked or made to appear ridiculous; a dupe: They made a fool of me by pretending I had won.
Or
6.One who subverts convention or orthodoxy or varies from social conformity in order to reveal spiritual or moral truth: a holy fool.
laugh, you clown, and everyone will cheer!
Turn your agony and your tears
into buffoonery,
your sobbing and pain
into a funny grimace - Ah!
Laugh, you clown,
at your broken love.
Laugh at the pain which poisons your heart.
Pagliacci