architonnerre
architonnerre is a steam cannon or invention.
Overview
Project by Leonardo da Vinci.
In detail
It is recorded as the work of Leonardo da Vinci.
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
“Architonnerre”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q4787225: architonnerre
Consult the source