WordNet sense 1 (animal food for browsing or grazing):

forage, grass, pasturage, eatage

WordNet sense 2 (a field covered with grass or herbage and suitable for grazing by livestock):

lea, pastureland, ley, grazing land

WordNet sense 3 (let feed in a field or pasture or meadow):

crop, graze

WordNet sense 4 (feed as in a meadow or pasture):

browse, range