Hijack meaning : 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. To forcibly stop and 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 hijack a browser). To introduce an amendment deleting the contents of a bill and inserting entirely new provisions.