carthoun means A type of early cannon.
Etymology
Borrowed from German Kartaune, from Italian quartana (“25-pounder cannon”).
noun
- A type of early cannon.“There too went Master Wolff Danner […] and by his side, Böheim, the master of the gun-founders who made their burnished, beautifully ornamented gun-barrels, cannon, primitive guns and carthouns famous through the whole world.”