Professional clown of the middle ages (6)
I believe the answer is:
jester
'professional clown of the middle ages' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for jester that I've seen before include "Funny man, once at court" , "Clown employed to entertain a ruler" , "Royal comedian" , "Court clown" , "Professional joker" .)