Describes apocalyptic destruction and devastation in the English county of Devon wrought by extreme bad weather. A portmanteau of Devon and devastation.
Rob: Have you seen the storm damage in Dawlish? The train line is hanging off a cliff and a house is falling into the sea!
Vikki: Yeah, prime devonistation!
Vikki: Yeah, prime devonistation!
by Harrybo February 9, 2014