Cut throat (4)
I believe the answer is:
crop
This clue could be a double definition.
'cut' is the first definition.
(cropping is a kind of cutting)
'throat' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
Can you help me to learn more?
(Other definitions for crop that I've seen before include "Yield from a single growing season" , "Dock" , "Line (of mountains)" , "Season's produce" , "Harvest or kind of whip" .)