Curtain (noun)

1. A piece of cloth or other material used to block out light, provide privacy, or decorate a window or doorway.
2. A hanging partition used to separate a stage from the auditorium in a theater.
3. The closing scene or event that marks the end of a play, movie, or other performance.

Origin:

Middle english (denoting a hanging cloth): from old french cortine, from latin cortina 'curtain', from cortina 'curtain, bed canopy', from cortus 'a cut, dividing line', from curtus 'cut short'. the verb (late 16th century) is from the noun.

Examples:

1. She drew the curtains to block out the sun.
2. The curtains were made of heavy velvet and lined with silk.
3. The curtains opened to reveal a breathtaking view of the city.
4. The curtains rose to start the performance.
5. The curtains closed to end the play.