|1.||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)|
|2.||a total or crushing defeat (esp in meet one's Waterloo)|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a fool or simpleton; ninny.|
see meet one's waterloo.