Hiroshima

Full definition of Hiroshima

Proper noun

1. A city in Honshu, Japan, devastated by the first atomic bomb dropped in warfare on August 6, 1945.
2. (figuratively) catastrophe.
• 2011 April, Michael Joseph Gross, “A Declaration of Cyber-War”, Vanity Fair:Stuxnet is the Hiroshima of cyber-war.