He entertains a great many (4)
I believe the answer is:
host
This clue might be a double definition.
'he entertains' is the first definition.
(I've seen this before)
'many' is the second definition.
(I've seen this in other clues)
'a great' is the link.
This may not be right. Some or all of it may belong to one of the definitions.
Can you help me to learn more?
(Other definitions for host that I've seen before include "Entertainer; army" , "Army; publican" , "Party giver" , "One receiving guests" , "Crowd-entertainer" .)