Æfesen

According to the Old English Dictionary:

æfesn, æbesen, æbesn, e;

æfesen

f. Pasturage, the charge for pigs going into the wood to fatten on acorns; pasnagium, pretium propter porcos in quercetum admissos :-- Gif mon níme æfesne on swínum if [a man] any one take pasturage on swine, L. In. 49; Th. i. 132, 18. æfesen