And-lang

According to the Old English Dictionary:

-long, [ond-];

and-lang

adj. All-along, throughout, continuous, extended; per totum, continuus, in longum porrectus :-- Wæs andlangne dæg swungen was beaten all day long, Andr. Kmbl. 2550; An. 1276: Chr. 937; Th. 202, 27, col. 2; Æðelst. 21: Beo. Th. 4237; B. 2115. and-lang