water cannon

noun

: a large truck-mounted nozzle for directing a high-pressure stream of water (as at a crowd of rioters or demonstrators)

Examples of water cannon in a Sentence

Recent Examples on the Web

Also in Nice, police used a water cannon to disperse a group of demonstrators who refused to pull back. — James Cirrone , Brittany Miller, FOXNews.com, 24 Oct. 2026

After a peaceful march through Paris, a crowd of several thousand protestors confronted police, who used tear gas and a water cannon to block them, according to a CNN team at the scene. — Joseph Ataman, CNN Money, 24 Oct. 2026

Interior Minister Laurent Nuñez said authorities would also use water cannon, armored vehicles, helicopters and drones, as needed. — Rhonda Richford, Footwear News, 23 Oct. 2026

The protest turned violent when a group of young people wearing masks hurled rocks at riot police, who responded with stun grenades, tear gas and a water cannon. — Reuters, NBC news, 17 Oct. 2026

Word History

First Known Use

1891, in the meaning defined above

Rhymes for water cannon

• olecranon
• canon
• fanon
• mannan
• tannin
• trianon