water cannon

Definition of Water Cannon in English :

1. water cannon, watercannon

a hose (carried on a truck) that fires water under high pressure to disperse crowds (especially crowds of rioters)

WordNet Lexical Database for English. Princeton University. 2010.

Water Cannon

noun

an apparatus for pumping water through a nozzle at high pressure, used in quelling riots

a pumping device which produces a powerful jet of water, used as by the police to disperse crowds

n.

A truck-mounted apparatus that fires water at high pressure, used especially to disperse crowds or control rioters.