valance
noun [ C ] uk/ˈvæl.əns/ us/ˈvæl.əns/
（尤指悬挂在床沿的）短帷幔
a short piece of material that hangs down, usually around the base of a bed
US (UK pelmet)（遮挡门帘杆或窗帘杆的）门帘盒，窗帘盒
a a narrow strip of wood or cloth that is fixed above a window or door and hides the top of the curtains