Gin[n]
Bosworth & Toller Anglo-Saxon Old English Dictionary - gin[n]
According to the Old English Dictionary:
es;
- gin[n]
- n. A wide expanse:--Wíddra and síddra þonne befæðman mæge eorðan ymbhwyrft and úprodor, gársecges gin and þeós geómre lyft, Exod. 430.