What is the meaning of Hijack?

To forcibly seize control of some vehicle in order to rob it or to reach a destination (especially an airplane, truck or a boat).

To seize control of some process or resource to achieve a purpose other than its originally intended one.

To seize control of a networked computer by means of infecting it with a worm or other malware, thereby turning it into a zombie.

To change software settings without a user's knowledge so as to force that user to visit a certain web site.

To introduce an amendment deleting the contents of a bill and inserting entirely new provisions.

An instance of hijacking; the illegal seizure of a vehicle; a hijacking.

An instance of a seizure and redirection of a process.

An amendment which deletes the contents of a bill and inserts entirely new provisions.

Preflop, the position two before the dealer.

A highwayman, robber.

Source: wiktionary.org