columbiad
columbiad is a smoothbore cannon or artillery family.
Overview
Type of large-caliber cannon from the 19th century.
In detail
columbiad is a smoothbore cannon or artillery family.
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
“Columbiad”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1112628: columbiad
Consult the source