n. 讲笑话的人, 小丑

[ noun ]
a professional clown employed to entertain a king or nobleman in the Middle Ages
<noun.person>

Jester \Jest"er\, n. [Cf. {Gestour}.]
1. A buffoon; a merry-andrew; a court fool.

This . . . was Yorick's skull, the king's jester.
--Shak.

Dressed in the motley garb that jesters wear.
--Longfellow.

2. A person addicted to jesting, or to indulgence in light
and amusing talk.

He ambled up and down
With shallow jesters. --Shak.