Stop and apprehend (6)
I believe the answer is:
arrest
I believe this is a double definition.
'stop' is the first definition.
(I know that arrest is a kind of stop)
'apprehend' is the second definition.
(I know that apprehend can be written as arrest)
'and' is the link.
(Other definitions for arrest that I've seen before include "Apprehend; detain" , "Take into custody as police do" , "Cause to stop" , "Stop (on suspicion)" , "Stop - detain" .)