Metal for recycling (5)
I believe the answer is:
scrap
'metal for recycling' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for scrap that I've seen before include "Informal fight for waste material" , "Abolish; leftover" , "Fragment or slang fight (5)" , "Quarrel" , "Throw away - fight" .)