stanchion

剑桥词典

a fixed vertical bar or pole used as a support for something
（用于支撑的）支柱，杆
If this stanchion is removed , the stairs will collapse . 如果把这根支撑柱拿走，楼梯会塌下的。
His 18-yard shot hit the stanchion (= goalpost ) and went back into play . 他在离球门18码远处一脚射门，球撞到门柱后又弹回了场地。 返回 stanchion