I. ˈha-vək, -vik noun
Etymology: Middle English havok, from Anglo-French, modification of Old French havot plunder
Date: 15th century
1. : wide and general destruction : devastation
2. : great confusion and disorder
the blackout caused havoc in the city
II. transitive verb
( hav·ocked ; hav·ock·ing )
Date: 1577
: to lay waste : destroy