Brand in house arrested (4)
I believe the answer is:
sear
'brand' is the definition.
(both can mean to burn)
'in house arrested' is the wordplay.
'in' says the answer is hidden in the clue.
'SEAR' is hidden within 'house arrested'.
(Other definitions for sear that I've seen before include "Cook (quickly at great heat)" , "Burn, scorch intensely" , "Scorch, brand" , "Make very hot and dry" , "Scorch or burn the surface of" .)