The fifteen decisive battles of the world from marathon to Waterloo.
British Dictionary definitions for Waterloo
a small town in central Belgium, in Walloon Brabant province south of Brussels: battle (1815) fought nearby in which British and Prussian forces under the Duke of Wellington and Blücher routed the French under Napoleon. Pop: 29 003 (2004 est)
a total or crushing defeat (esp in meet one's Waterloo)
battle took place June 18, 1815, at village near Brussels; extended sense of "a final, crushing defeat" is first attested 1816 in letter of Lord Byron. The second element in the place name is from Flemish loo "sacred wood."