stockade

stockade
/stɔˈkeɪd; stɑk`ed/ n
line or wall of strong upright (esp wooden) posts, built as a defence （防御用的）栅栏（尤指木头的）. stockade, v [Tn usu passive 通常用於被动语态]
defend (an area) with a stockade 用栅栏防御（某区域）.

牛津英汉双解词典