Þeorf-dæg

According to the Old English Dictionary:

es;

þeorf-dæg

m. A day on which unleavened bread was to be eaten :-- Ðæt geríst preóstum tó witanne hwæt beó betwyx Eástron and ðeorfdagum. Eásterdæg wæs se forma dæg on ðære ealdan ǽ, þonne se móna wæs .xiiii., and ða seofon dagas, ðe ðǽr æfter wǽron, wǽron gecíged dies azimorum, Anglia viii. 330, 19. þeorf-dæg