Shed light (5)
I believe the answer is:
spill
This clue is a double definition.
'shed' is the first definition.
(I know that shed can be written as spill)
'light' is the second definition.
(I've seen this before)
(Other definitions for spill that I've seen before include "to make light of?" , "Fire lighter; reveal (confidential information)" , "Thin piece of wood used to light a fire" , "Shed" , "Overturn" .)