1. (noun)highjacker, hijacker someone who uses force to take over a vehicle (especially an airplane) in order to reach an alternative destination Synonyms: roadagent, highwayman, hijacker, highjacker
2. (noun)highjacker, highwayman, hijacker, road agent a holdup man who stops a vehicle and steals from it Synonyms: roadagent, highwayman, hijacker, highjacker