Eorþ-styrennis
Bosworth & Toller Anglo-Saxon Old English Dictionary - eorþ-styrennis
According to the Old English Dictionary:
-niss, e;
- eorþ-styrennis
- f. [styrenes motion] An earthquake; terræ mōtus :-- Eorþstyrennis gewarþ micelu terræ mótus factus est magnus, Mt. Kmbl. Rush. 28, 2. eorþ-styrennis