|Origin:||Perhaps from French coulon 'someone who settles in a new country', from Latin colonus; COLONY|
someone who wears funny clothes, a red nose, bright make-up on their face etc, and does silly things to make people laugh, especially at a circus
someone who often makes jokes or behaves in a funny way:
Frankie's a bit of a clown.
class clown (=someone in a school class who behaves in a funny or silly way)
a stupid or annoying person:
I can't understand what she sees in that clown.