Search Result for "hijacker": 
Wordnet 3.0

NOUN (2)

1. a holdup man who stops a vehicle and steals from it;
[syn: highjacker, highwayman, hijacker, road agent]

2. someone who uses force to take over a vehicle (especially an airplane) in order to reach an alternative destination;
[syn: highjacker, hijacker]



WordNet (r) 3.0 (2006):

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