Geofon
Bosworth & Toller Anglo-Saxon Old English Dictionary - geofon
According to the Old English Dictionary:
geofen, gifen, gyfen, es;
- geofon
- n. The sea, ocean; mare, oceanus :-- On geofones streám on the ocean's wave, Andr. Kmbl. 1704; An. 854: Exon. 57 b; Th. 205, 25; Ph. 118. Geofon geótende a gushing ocean, Andr. Kmbl. 3014; An. 1510. [O. Sax. gebano.]