Fitting stabbing instrument (7)
I believe the answer is:
bayonet
This clue might be a double definition.
'fitting' is the first definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
'stabbing instrument' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for bayonet that I've seen before include "Type of light bulb fitting" , "one's attached to one's rifle - that's sort of fitting" , "Dagger attached to 26 Across" , "Blade fixed to a rifle" , "Pointed weapon" .)