Palm-sunnandæg

According to the Old English Dictionary:

Palm-sunnandæg

Palm Sunday :-- Gyf se terminus becymþ on ðone Sunnandæg ðonne byþ se dæg Palmsunnandæg, Lchdm. iii. 244, 16. On Palmsunnandæg, Rub. Lk. Skt. 19, 29. [Icel. pálmsunnudagr.] palm-sunnandæg