Ge-byre
Bosworth & Toller Anglo-Saxon Old English Dictionary - ge-byre
According to the Old English Dictionary:
es;
- ge-byre
- m. The time at which anything happens, a favourable time, an opportunity; occasio, opportunitas :-- Hwonne him eft gebyre weorþe, hám cymeþ when there shall again be an opportunity to him he will come home, Exon. 90 b; Th. 340, 3; Gn. Ex. 105. [O. H. Ger. gaburi, f. eventus, casus.]