tank gun
tank gun is an artillery gun or vehicle weapon.
Also recorded as main gun.
Overview
Class of artillery mounted on a tank as its main armament.
In detail
It forms part of tank design.
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
“Tank gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q3241267: tank gun
Consult the source