n.
    - a plan made in secret by a group of people to do something illegal or harmful.
 - the main sequence of events in a play, novel, or film.
 - a small piece of ground marked out for building, gardening, etc.
 - a graph showing the relation between two variables. 
▸chiefly US a diagram, chart, or map.
 
v.
 (plots, plotting, plotted)
   - secretly make plans to carry out (something illegal or harmful).
 - devise the plot of (a play, novel, or film).
 - mark (a route or position) on a chart. 
▸mark out or allocate (points) on a graph.
 ▸make (a curve) by marking out a number of such points.
 ▸illustrate by use of a graph.
 
 
  Phrase
  
    - lose the plot
 Brit. informal lose one's ability to understand or cope with what is happening.  - the plot thickens
 see thicken. 
   
  Derivative
  
    - plotless adj.
  - plotter n.
  - plotty adj. (informal).
 
   
  Etymology
  OE (in sense 3 of the noun), of unknown origin; the sense ‘secret plan’ is assoc. with OFr. complot ‘dense crowd, secret project’.