paddock

paddock
/ˈpædək; `pædək/ n
1 small field where horses are kept or exercised （放牧和驯马用的）小围场.
2 enclosure at a racecourse or race-track where horses or racing-cars are brought together and paraded before a race （准备参赛的马或车的）检阅场.

牛津英汉双解词典