1 (US also 美亦作 drape) a piece of material that you can move to cover a window, etc 窗帘;挂帘;幕:
Could you draw the curtains, please? (= Could you open/close the curtains)可否请你将窗帘拉上?The curtain goes up at 7pm (= in a theatre, the play begins).戏晚上7点开演。
2 a thing that covers or hides sth 覆盖或遮蔽(某物)的东西:
a curtain of mist一层薄雾