Ge-sweoru

According to the Old English Dictionary:

-swiru, -swyru;

ge-sweoru

pl. n. Hills; colles :-- Wurdan gesweoru swá on seledreáme swá on sceápum beóþ sceóne lambru colles vĕlut agni ŏvium, Ps. Th. 113, 6. Mid wynngráfe weaxaþ geswiru [MS. gespiru] exultātiōne colles accingentur, 64, 13. Muntas and geswyru montes et omnes colles, 148, 9: 71, 3: 113, 4. ge-sweoru