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Definitions

Proper Noun

1. 1
   The events of 16 August 1819, when cavalry charged into a large crowd that had gathered in St Peter's Field, Manchester, England, to demand the reform of parliamentary representation, killing fifteen and injuring hundreds more. historical

Etymology

Blend of Peter + Waterloo, in an ironic comparison to the Battle of Waterloo, which had taken place four years earlier.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.