Definition of "complot"

LOR. Now to confirme the complot thou hast castOf all these practices, Ile spread the watch,Vpon precise commandement from the kingStrongly to guard the place where PedringanoThis night shall murder haples Serberine.

c. 1582-1592, Thomas Kyd, The Spanish Tragedie, Act 3, Scene 2

AARON: […] / For I must talk of murders, rapes, and massacres,Acts of black night, abominable deeds,Complots of mischief, treason, villainies,Ruthful to hear, yet piteously perform'd: / […]

c. 1588–1593 (date written), William Shakespeare, “The Lamentable Tragedy of Titus Andronicus”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act V, scene i]

The young advertising agent stood against the fence in silent horror, his heart bumping heavily. His hands were clammy, his feet seemed to have grown larger and taken root. What damnable complot was this?

1919, Christopher Morley, The Haunted Bookshop‎, New York, N.Y.: Grosset & Dunlap Publishers, page 164

BOLINGBROKE. […] Besides, I say and will in battle prove,Or here, or elsewhere to the furthest vergeThat ever was survey'd by English eye,That all the treasons for these eighteen yearsComplotted and contrived in this land,Fetch from false Mowbray their first head and spring.

1595 December 9 (first known performance), William Shakespeare, “The life and death of King Richard the Second”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act 1, scene 1]