"plotters" in the noun sense
1. schemer, plotter
a planner who draws up a personal scheme of action
2. plotter, mapper
a clerk who marks data on a chart
3. conspirator, coconspirator, plotter, machinator
a member of a conspiracy
4. plotter
an instrument (usually driven by a computer) for drawing graphs or pictures
Source: WordNet® (An amazing lexical database of English)
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