curtain · noun C /ˈkɜr.tən/Full view
A2 a piece of material which hangs down to cover a window, stage, etc.
Dictionary examples:

Could you close/draw the curtains?

She opened the curtains.

Heavy curtains blocked out the sunlight.

Learner example:

I think it is behind the curtains. (Key English Test; A2; Spanish)

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