Meaning of “hijack” - Learner’s Dictionary

hijack

verb [ T ] uk us /ˈhaɪdʒæk/

to take control of an aircraft during a journey, especially using violence:

[ often passive ] The plane was hijacked by terrorists.
hijacker noun [ C ]
hijacking noun [ C, U ]

(Definition of “hijack” from the Cambridge Learner’s Dictionary © Cambridge University Press)