Eorþ-bifung

According to the Old English Dictionary:

-beofung, e;

eorþ-bifung

f. [bifung a trembling, shaking] An earthquake; terræ mōtus :-- Ðǽr wearþ geworden micel eorþbifung terræ mōtus factus est magnus, Mt. Bos. 28, 2. Híg gesáwon ða eorþbifunge vīdērunt terræ mōtum, 27, 54. eorþ-bifung