Rod's joint (7)
I believe the answer is:
ferrule
This could be a double definition.
'rod's' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I don't see?
'joint' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps there's a link between them I don't understand?
Can you help me to learn more?
(Other definitions for ferrule that I've seen before include "Metal cap on end of stick" , "Protective metal cap" , "Cap for protecting the tip of a walking-stick" , "Metal band on umbrella" , "Metal band on the tip of a stick" .)