Fight in Somerset town (3-2)
I believe the answer is:
set-to
'fight' is the definition.
(I know that set-to is a type of fight)
'in somerset town' is the wordplay.
'in' says the answer is hidden in the clue.
'SET-TO' can be found hidden inside 'somerset town'.
(Other definitions for set-to that I've seen before include "Scrap" , "Brief fight" , "Altercation" , "Ready - fight" , "brush with violence?" .)