Frettan

According to the Old English Dictionary:

frettan

p. te; pp. ed To feed upon, eat up, consume; depasci :-- Hine [wíngeard] wilde deór wéstaþ and frettaþ singŭlāris fĕrus depastus est eam [vīneam], Ps. Th. 79, 13. Hie ðæt corn forbærndon, and mid hira horsum fretton on ǽlcere efenéhþe they burned the corn, and with their horses ate it up on every plain, Chr. 894; Erl. 93, 12. Fretton comederunt, Mk. Skt. Lind. 4, 4. frettan