proscenium

The area of a modern theater that is located between the curtain and the orchestra.

The stage of an ancient theater, located between the background and the orchestra.

A proscenium arch.

In the ancient theater, the stage before the scene or back wall.

In the modern theater, that part of the house which lies between the curtain or drop-scene and the orchestra: often used also to mean the curtain and the arch or framework which holds it.

The part where the actors performed; the stage.

The part of the stage in front of the curtain; sometimes, the curtain and its framework.

The stage area between the curtain and the orchestra.

The stage area immediately in front of the scene building.

The row of columns at the front the scene building, at first directly behind the circular orchestra but later upon a stage.