Plot  —n. 1 defined and usu. Small piece of land. 2 interrelationship of the main events in a play, novel, film, etc. 3 conspiracy or secret plan. —v. (-tt-) 1 make a plan or map of. 2 (also absol.) Plan or contrive secretly (a crime etc.). 3 mark on a chart or diagram. 4  make (a curve etc.) By marking out a number of points. 5  provide (a play, novel, film, etc.) With a plot.  plotter n. [old english and french complot]