Cease smashing pots (4)
I believe the answer is:
stop
'cease' is the definition.
(I know that cease can be written as stop)
'smashing pots' is the wordplay.
'smashing' indicates an anagram.
'pots' is an anagram of 'STOP'.
(Other definitions for stop that I've seen before include "Hold on" , "Don't allow" , "Halt, whoa, desist" , "Come to a halt" , "Stay" .)