Play group with an active use for a carthorse (9)
I believe the answer is:
orchestra
'play group' is the definition.
The definition and answer can be both groups as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'an active use for a carthorse' is the wordplay.
'carthorse' can be anagrammed to 'ORCHESTRA'.
But, I'm not clear how this is indicated.
'with' acts as a link.
Can you help me to learn more?
(Other definitions for orchestra that I've seen before include "players in pit" , "Big band" , "Other cars (anag.)" , "Gamelan, for instance" , "Instrumental group" .)