チャズブルMeanings1nounchasublerare termA sleeveless outer vestment worn by a priest during Mass. Rare term; more commonly referred to as 上祭服 (じょうさいふく) in Japanese.See also: 上祭服司し祭さいはミサのときにチャズブルを着ちゃく用ようする。The priest wears a chasuble during Mass.