Comic entertainer (5)
I believe the answer is:
clown
'comic entertainer' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for clown that I've seen before include "Circus performer" , "Long-booted, bow tie-twirling circus entertainer" , "Made-up entertainer" , "Chap fooling around" , "Clumsy fool" .)