Entertainer’s crowd (4)
I believe the answer is:
host
This clue is a double definition.
'entertainer's' is the first definition.
(person hosting or entertaining guests)
'crowd' is the second definition.
(both can mean a large number of people)
(Other definitions for host that I've seen before include "Present" , "Does he invite a large number?" , "Multitude -- MC" , "Provide entertainment" , "One entertaining, large number" .)