As a Noun: 1. The chasing and catching of someone who is then put somewhere where they cannot get out until it is decided what to do with them. Used especially for the activities of the police or soldiers in war. English = arrest, capture, apprehension. As a Verb or Adjective: 1. To chase and catch someone and then put them somewhere where they cannot get out. Used especially for the activities of the police or soldiers in war. English = arrest, capture. Formal English = apprehend.