noun
pacifist constitution
Refers to a constitution that renounces war and the maintenance of military forces; in Japanese context, almost always refers to the post-WWII Constitution of Japan (especially Article 9).
日本国憲法は平和主義憲法として知られている。
The Constitution of Japan is known as a pacifist constitution.
Compound of 平和主義 (pacifism) and 憲法 (constitution).