Blames are shifted to the light (5,4)
I believe the answer is:
laser beam
'the light' is the definition.
(laser beam is a kind of light)
'blames are shifted' is the wordplay.
'shifted' indicates an anagram.
'blames'+'are'='blamesare'
'blamesare' anagrammed gives 'LASER BEAM'.
'to' acts as a link.
(Other definitions for laser beam that I've seen before include "Intense ray of light" , "Shaft of light or electromagnetic radiation" , "Column of intensified light" , "Shaft of light or electro-mechanic radiation" , "penetrating light" .)