Pair in York perhaps binge (5)
I believe the answer is:
spree
'binge' is the definition.
(I've seen this before)
'pair in york perhaps' is the wordplay.
'pair' becomes 'pr' (abbreviation).
'in' indicates putting letters inside.
'york perhaps' becomes 'see' (York is a see, an area under a bishop's authority).
'pr' going into 'see' is 'SPREE'.
(Other definitions for spree that I've seen before include "Overindulgent bout" , "Bout of self-indulgence" , "Beano" , "Carefree, lively outing" , "Bout of indulgence" .)