When curtains are drawn , it usually means they are closed or pulled together. In some older or dialect-specific usage, “draw” can also mean to open curtains, but in everyday English, “drawn curtains” most often means closed.

Plain meaning

  • “Draw the curtains” commonly means close them.
  • “Drawn curtains” usually means the curtains are closed.
  • If someone means open curtains, they often say “draw them back” or simply “open the curtains”.

Example

  • “The room was dark because the curtains were drawn.”
    That implies the curtains were closed.

Small caveat

The phrase can be a little ambiguous in some varieties of English, because “draw” originally means “pull,” so context matters. But if you hear “curtains are drawn,” the safest interpretation is closed.