Source : WordNet®

white trash
     n : an offensive term for White people who are impoverished
         [syn: {poor white trash}, {poor white}]

Source : Free On-Line Dictionary of Computing

white trash
     
         A pejorative term for {Intel}-based
        {microcomputers}, used by {NeXT} users at UK law firm
        Linklaters & Paines to contrast these machines with their
        black NeXT boxes.
     
        (1996-09-04)