definition of a building wall
A brick wall. A wall is a structure that defines an area, carries a load, or provides shelter or security. There are many kinds of walls: Defensive walls in fortification. Walls in buildings that form a fundamental part of the superstructure or separate interior sections, sometimes for fire safety. Retaining walls, which hold back dirt, stone, water,or noise sound. Walls that protect from oceans (seawalls or rivers levees) Permanent, solid fences.