Definition of "havoc"

Ye gods, what havoc does ambition make / Among your works!

1712 (date written), [Joseph] Addison, Cato, a Tragedy. […], London: […] J[acob] Tonson, […], published 1713, Act I, scene i, page 1

But when I had come to that part of the city which I judged to have contained the relics I sought I found havoc that had been wrought there even greater than elsewhere.

1918, Edgar Rice Burroughs, The People that Time Forgot‎, HTML edition, The Gutenberg Project, published 2008

To tear and havoc more than she can eat.

1599, William Shakespeare, “The Life of Henry the Fift”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act I, scene ii]

Do not cry havoc, where you should but hunt / With modest warrant.

c. 1608–1609 (date written), William Shakespeare, “The Tragedy of Coriolanus”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, (please specify the act number in uppercase Roman numerals, and the scene number in lowercase Roman numerals)

Cry "havoc", and let slip the dogs of war!

1599 (first performance), William Shakespeare, “The Tragedie of Iulius Cæsar”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene i]