A large composite picture placed on the interior walls of a cylindrical room so as to appear in natural perspective to a spectator standing in the center of the room.
A large curtain or wall, usually concave, hung or placed at the rear of a stage.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.