Source : Free On-Line Dictionary of Computing

IBM compatible
     
         A computer which can use hardware and software
        designed for the {IBM PC} (or, less often, IBM {mainframes}).
     
        This was once a key phrase in marketing a new PC {clone} but
        now in 1998 is rarely used, the non-IBM {wintel} {personal
        computer} manufacturers such as {Compaq}, {Dell} and {Gateway
        2000} and OS vendor {Microsoft} having taken control of the
        market, marginalising IBM.
     
        (1998-07-30)