staircases is staircase's Plural Form

staircase

US [ˈsterˌkeɪs]
UK [ˈsteə(r)ˌkeɪs]
  • na.楼梯;楼梯间[室]
  • Web楼梯设计;楼梯通道
Plural Form:staircases  
na.
1.
楼梯;楼梯间[室]