Eáster-ǽfen

According to the Old English Dictionary:

eástor-ǽfen, es;

eáster-ǽfen

m. Easter-even; dies ante festum paschæ:-- Ðys sceal on eáster-ǽfen this [gospel] must be on easter-even, Rubc. Mt. Bos. 28, 1; notes, p. 577, 28, I a. easter-æfen