Run down to shelter with one place to make a fire (9)
I believe the answer is:
denigrate
'run down' is the definition.
(I've seen this before)
'shelter with one place to make a fire' is the wordplay.
'shelter' becomes 'den' (I've seen this in other clues).
'with' is a charade indicator (letters next to each other).
'one' becomes 'i' (Roman numeral).
'place to make a fire' becomes 'grate' (metal frame in a fireplace).
'den'+'i'+'grate'='DENIGRATE'
'to' acts as a link.
(Other definitions for denigrate that I've seen before include "Run down" , "Slight" , "put down" , "Defame" , "Bad-mouth" .)