noun
Ishiyama Honganji War (1570–1580)
Historical term for the decade-long siege of the Ishiyama Honganji fortress by Oda Nobunaga's forces.
石山合戦は、織田信長と本願寺勢力の間で行われた長期戦である。
The Ishiyama Honganji War was a prolonged conflict between Oda Nobunaga and the Honganji forces.
Compound of 石山 (Ishiyama, the fortress name) and 合戦 (battle, war). The term refers specifically to the historical conflict.