wall an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure; "the south wall had a small window"; "the walls were covered with pictures"
A Proscenium theatre is a theatre space whose primary feature is a large frame or arch (called the proscenium arch even though it is frequently not a rounded archway at all), which is located at or near the front of the stage. The use of the term "proscenium arch" is explained by the fact that in Latin, the stage is known as the "proscenium", meaning "in front of the scenery. " In a proscenium theatre, the audience directly faces the stage, which is typically raised several feet above front row audience level, and views the performance through the proscenium "arch".
