Cut theatre for men only (4)
I believe the answer is:
stag
'men only' is the definition.
(I've seen this before)
'cut theatre' is the wordplay.
'cut' means to remove the last letter.
'theatre' becomes 'stage' (stage is a kind of theatre).
'stage' with its last letter taken off is 'STAG'.
'for' is the link.
(Other definitions for stag that I've seen before include "Stockmarket operator gambling on a quick profit" , "Stock Exchange speculator standing" , "speculator wanting quick profit" , "Stock market speculator" , "Men-only" .)