hijacks, hijacking, hijacked
1) VERB If someone hijacks a plane or other vehicle, they illegally take control of it by force while it is travelling from one place to another.

[V n] Two men tried to hijack a plane on a flight from Riga to Murmansk...

[V n] A Chinese airliner was hijacked by two passengers and forced to fly to Taiwan...

[V-ed] The hijacked plane exploded in a ball of fire.

Derived words:
hijacking plural N-COUNT

Car hijackings are running at a rate of nearly 50 a day.

Hijack is also a noun.

Every minute during the hijack seemed like a week.

2) VERB (disapproval) If you say that someone has hijacked something, you disapprove of the way in which they have taken control of it when they had no right to do so.

[V n] A peaceful demonstration had been hijacked by anarchists intent on causing trouble.

English dictionary. 2008.