From Longman Dictionary of Contemporary Englishhijackhi‧jack1 /ˈhaɪdʒæk/ ●○○ verb [transitive] 1 SCCTTto use violence or threats to take control of a plane, vehicle, or ship → carjack The airliner was hijacked by a group of terrorists.2 CONTROLto take control of something and use it for your own purposes Some people think the party has been hijacked by right-wing extremists. —hijacker noun [countable]→ See Verb table
Examples from the Corpus
hijack• The ship was hijacked by four young terrorists.• We're not going to let a handful of radical students hijack our school.hijackhijack2 noun [countable] British EnglishSCCTT when a plane, vehicle etc is hijacked 