Comedian in Jackass needing no introduction (3)
I believe the answer is:
wit
'comedian' is the definition.
(a witty person)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for wit that I've seen before include "Cleverness with words and ideas" , "Joker" , "Intelligence; humorist" , "Quickness at clever remarks" , "Drollery" .)