Way burnt remains hide (5)
I believe the answer is:
stash
'hide' is the definition.
(I've seen this before)
'way burnt remains' is the wordplay.
'way' becomes 'st' (abbreviation for street).
'burnt remains' becomes 'ash' (remains of a fire).
'st'+'ash'='STASH'
(Other definitions for stash that I've seen before include "Secret store (colloq.)" , "Cache" , "Hide (something) away" , "drug store" , "collection" .)