Source : Free On-Line Dictionary of Computing

printer port
     
         A connector found on many {microcomputers}
        intended for attaching a printer.  This may be a
        general-purpose input/output {parallel port} or may be a
        special {Centronics} interface.
     
        Most printers can also be connected to a {serial port} but
        that is unlikely to be described as a "printer port".
     
        (1996-01-07)