Quiver inside (5)
I believe the answer is:
arrow
'quiver inside' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
This is all the clue.
Can you help me to learn more?
(Other definitions for arrow that I've seen before include "One in a quiver" , "Missile in a quiver" , "Move swiftly" , "What's shot from a bow" , "Keepsake" .)