steam cannon
steam cannon is a cannon or weapon type.
Overview
A large caliber projectile weapon powered by steam pressure.
In detail
steam cannon is a cannon or weapon type.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Steam cannon”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1158812: steam cannon
Consult the source