Stopped around peak (3)
I believe the answer is:
top
'peak' is the definition.
(I know that peak can be written as top)
'stopped around' is the wordplay.
'around' indicates the answer is hidden within the clue.
'TOP' is hidden within 'stopped'.
(Other definitions for top that I've seen before include "Upper side" , "Better" , "Pinnacle" , "Acme or apex" , "Most successful" .)