stair

/stɛr/

support consisting of a place to rest the foot while ascending or descending a stairway

中文释义：楼梯；阶梯

He tripped on the top stair and fell down.

他在最上面的台阶上绊倒了。

The old building had narrow wooden stairs.

那栋旧建筑有狭窄的木楼梯。