Point made by returning pots (4)
I believe the answer is:
stop
'point' is the definition.
(I know that point can be written as stop)
'returning pots' is the wordplay.
'returning' says the letters should be written in reverse.
'pots' back-to-front is 'STOP'.
'made by' acts as a link.
(Other definitions for stop that I've seen before include "port of call" , "Pause - prevent" , "Stay" , "End - period" , "Wind up" .)