An upright structure of masonry, wood, plaster, or other building material serving to enclose, divide, or protect an area, especially a vertical construction forming an inner partition or exterior siding of a building, Something resembling a wall in impenetrability or strength, A defense; means of security or protection, transitive verb_ To confine or seal behind a wall; immure, To block or close (an opening or passage, for example) with or as if with a wall, To close or fill with a wall, as a doorway