Source : Webster's Revised Unabridged Dictionary (1913)

Plotter \Plot"ter\, n.
   One who plots or schemes; a contriver; a conspirator; a
   schemer. --Dryden.

Source : WordNet®

plotter
     n 1: a planner who draws up a personal scheme of action [syn: {schemer}]
     2: a clerk who marks data on a chart [syn: {mapper}]
     3: a member of a conspiracy [syn: {conspirator}, {coconspirator},
         {machinator}]
     4: an instrument (usually driven by a computer) for drawing
        graphs or pictures

Source : Free On-Line Dictionary of Computing

plotter
     
         A device that uses one or more pens that can be
        raised, lowered and moved over the printing media to draw
        graphics or text.
     
        The heart of the plotter is the printer head assembly,
        consisting of a horizontal bar and, attached to it, the head
        assembly holding the pen in use.  The pen can be positioned
        horizontally by moving the pen assembly along the bar.
        Vertical positioning is achieved by either moving the bar
        (stationary page plotter) or the paper (rolling page plotter).
        Combinations of horizontal and vertical movement are used to
        draw arbitrary lines and curves in a single action, in
        contrast to {printers} which usually scan horizontally across
        the page.
     
        Colour plots can be made by using more than one pen.  Older
        plotters required a separate pen for each colour and the pens
        had to be changed by hand.  Modern colour plotters usually use
        only four pens (cyan, magenta, yellow, and black, see {CMYK})
        and need no human intervention to change them.
     
        Monochromatic plotters have been largely phased out by {laser
        printers} except when large paper size is needed, e.g. in
        {CAD}.
     
        (1996-01-10)