slipcover /ˈslɪpˌkʌvə/ (also slip cover)

• 1. 

  N-COUNT A slipcover is a piece of cloth that fits over a chair or sofa and can easily be removed. 椅套; 沙发套 [美国英语]

  例：

  ...the slipcovers on the dining room chairs.

  ...餐厅里的椅子套。