聖せい枝し祭さいMeanings1nounPalm SundayChristianityChristian feast commemorating Jesus' triumphal entry into Jerusalem. Also known as 枝の主日.See also: 枝の主日聖せい枝し祭さいは復ふっ活かつ祭さいの一いっ週しゅう間かん前まえの日にち曜よう日びに行おこなわれる。Palm Sunday is observed on the Sunday one week before Easter.