potreiro: terreno cercado para recolher gado cavalar e muar

What Is the Difference Between a Pasture, a Paddock, and a Stable?
A pasture is a fenced, grassy field or hillside on which horses can live and feed. A paddock is a smaller, enclosed field near a stable or house. A stable is a building fitted with stalls, where horses are kept. Most stables also have a storage area for feed and an area for tack—that is, saddles and other riding equipment.

http://animals.howstuffworks.com/mammals/horse-info11.htm