Dead Curtain in dreams
Cloth across a window — the chosen line between the inside and what may look in.
How dead changes the reading
Dead in the dream means the symbol's energy is no longer in active circulation in your life. The reading is not necessarily grim — most often it is the dream noting that something you had been carrying has run its full course and you can stop carrying it.
The base reading of Curtain
A curtain in a dream is the dream's image of a privacy you control. Curtains do not lock the world out; they decide what may be seen at which times. The dream brings the curtain when you are negotiating how much of your interior life is on view. A drawn curtain is the dream telling you the privacy is intact and is your choice. A curtain torn down or stuck open is the dream noting that the screen you thought you had — between your private life and the people watching it — is no longer functioning, and someone is seeing in.