Here are some other options, depending on the specific context:
* Meadow: A grassy field, often near a river or stream.
* Common: A shared grazing area, often open to all.
* Ley: A field that is sown with grass for temporary grazing.
* Sward: The surface layer of a pasture, consisting of grass and other vegetation.
* Range: A large area of land used for grazing livestock, often in the western United States.
* Ranch: A large farm where livestock is raised, typically including pastureland.
The best word to use depends on the specific characteristics of the pasture and the context in which you are using it.