Plotter (noun)

1. A person who plots, especially against the government or an organization.
2. A machine used for drawing graphs, maps, or architectural plans.

Origin:

Early 17th century (in the sense "person who plots"): from plot + -er.

Examples:

1. The police arrested the ringleader of the group of plotters.
2. The plotters had been planning to overthrow the government for months.
3. The engineer used the plotter to print out the blueprints for the building.
4. The plotter was a large machine that used pens to draw the graphs and charts.
5. The architect used the plotter to create a detailed plan of the building site.