Play about church having money that's obsolete (7)
I believe the answer is:
drachma
'money that's obsolete' is the definition.
I can't judge whether this definition defines the answer.
'play about church' is the wordplay.
'play' becomes 'drama' (synonyms).
'about' indicates putting letters inside.
'church' becomes 'ch' (abbreviation on maps etc).
'drama' enclosing 'ch' is 'DRACHMA'.
'having' is the link.
Can you help me to learn more?
(Other definitions for drachma that I've seen before include "Old Greek settler" , "Money no longer available" , "European currency replaced by the euro in 2002" , "Former Greek currency unit" , "Formerly the basic unit of money in Greece" .)