Armies of entertainers? (5)
I believe the answer is:
hosts
I believe this is a double definition.
'armies' is the first definition.
(host is a kind of army)
'entertainers?' is the second definition.
(host is a kind of entertainer)
'of' acts as a link.
(Other definitions for hosts that I've seen before include "vast crowds" , "Those giving a party" , "Multitudes" , "Shots fired at party givers" , "Great numbers of those who entertain?" .)