IPA: //ˌwɔːtəˈluː//
KK: /ˈwɔːtərluː/
A significant and often overwhelming defeat or setback, especially one that marks a turning point.
The team's loss in the championship was their waterloo, ending their hopes for the season.
Waterloo originates from the Dutch place name 'Waterloo', which is derived from 'water' (meaning water) and 'loo' (meaning a clearing or forest). The name refers to a location near water, specifically a clearing by a body of water.
Think of 'water' as a body of liquid and 'loo' as a clearing or open space — this helps you remember that Waterloo refers to a place near water.