Feed the furnace in this town (5)
I believe the answer is:
stoke
I believe this is a double definition.
'feed the furnace' is the first definition.
(I've seen this in another clue)
'this town' is the second definition.
'in' is the link.
(Other definitions for stoke that I've seen before include "Where pottery is made" , "Add coal to (a fire)" , "keep the furnace going" , "Scene of Gray's country churchyard" , "Add fuel to" .)