[waw-ter-loo, wot-er-, waw-ter-loo, wot-er-; for 1 also Flemishvah-tuhr-loh] /ˈwɔ tərˌlu, ˈwɒt ər-, ˌwɔ tərˈlu, ˌwɒt ər-; for 1 also Flemish ˈvɑ tərˌloʊ/
noun
1.
a village in central Belgium, south of Brussels: Napoleon decisively defeated here on June 18, 1815.
2.
a decisive or crushing defeat:
The candidate met her Waterloo in the national elections.
3.
a city in E Iowa.
4.
a city in SE Ontario, in S Canada.
Examples from the web for Waterloo
The fifteen decisive battles of the world from marathon to Waterloo.
British Dictionary definitions for Waterloo
Waterloo
/ˌwɔːtəˈluː/
noun
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)
Word Origin and History for Waterloo
n.
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."