pasture -
To feed, especially on growing grass; to supply grass as food for.
Wikipedia
Pasture is land with vegetation cover used for grazing of livestock as part of a farm, or in ranching or other unenclosed pastoral systems or used by wild animals for grazing or browsing. Prior to the advent of factory farming, pasture was the primary source of food for grazing animals such as cattle and horses. It is still used extensively, particularly in arid regions where pasture land is unsuitable for any other agricultural production.
OmegaWiki Dictionary
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pasture Land covered with grass or herbage and grazed by or suitable for grazing by livestock.
pasture To put livestock into a field or pasture or meadow to graze.
pasture (For livestock) To feed on grass or herbage from a pasture.