Source : WordNet®

reboot
     v : cause to load (an operating system) and start the initial
         processes; "boot your computer" [syn: {boot}, {bring up}]

Source : Free On-Line Dictionary of Computing

reboot
     
         (From {boot}) A {boot} with the implication
        that the computer has not been down for long, or that the
        {boot} is a {bounce} intended to clear some state of
        {wedgitude}.
     
        See {warm boot}.
     
        (1995-11-27)