More than one local in front of Borstal during discharge (4)
I believe the answer is:
pubs
'more than one local' is the definition.
(I've seen this before)
'front of borstal during discharge' is the wordplay.
'front of' says to take the initial letters.
'during' means one lot of letters goes inside another.
'discharge' becomes 'pus' (discharge from the body).
The initial letter of 'borstal' is 'b'.
'b' going into 'pus' is 'PUBS'.
'in' acts as a link.
(Other definitions for pubs that I've seen before include "Inns, drinking places" , "Locals" , "Hostelries" , "Taverns" .)