Ealdor-dæg

According to the Old English Dictionary:

ealder-dæg, aldor-dæg;

ealdor-dæg

gen. -dæges; pl. nom. acc. -dagas; m. Life-day, day of life; vitæ dies :-- On ealderdagum in the days of his life, Beo. Th. 1518; B. 757: 1440; B. 718. ealdor-dæg