Kink in pot – sent back (4)
I believe the answer is:
loop
'kink in' is the definition.
The definition and answer can be both shapes as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'pot sent back' is the wordplay.
'pot' becomes 'pool' (both can mean a shared resource of money).
'sent back' is a reversal indicator.
'pool' backwards is 'LOOP'.
Can you help me to learn more?
(Other definitions for loop that I've seen before include "the knowledgeable are in it" , "Aerobatic manoeuvre" , "Oval shape" , "Oval-shaped coil" , "Shape produced by a curve crossing itself" .)