Eorþ-weall

According to the Old English Dictionary:

es;

eorÞ-weall

m. An earth-wall, mound; agger :-- Under eorþweall under the earth-wall, Beo. Th. 6171; B. 3090. Mid eorþwealle with an earth-wall, Bd. 1, 5; S. 476, 10: 4, 28; S. 605, 24. eorþ-weall