Arrest, slangily (4)
I believe the answer is:
bust
'arrest slangily' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bust that I've seen before include "Broken - bankrupt - sculpture" , "Upper body goes bankrupt" , "item of statuary" , "Financially ruined" , "Raid - boobs" .)