Has no further use for field glasses? (4)
I believe the answer is:
bins
This clue is a double definition.
'has no further use for' is the first definition.
(throws in a bin)
'field glasses?' is the second definition.
(short for binoculars)
(Other definitions for bins that I've seen before include "Rubbish receptacles" , "Containers for refuse" , "aid to viewing" , "Rejects" , "Containers for wine or rubbish" .)