A wall opening could be a serving hatch, a window, or a door.
sill opening of a wall
The opening of the Berlin Wall signified the closing of the Cold War.
The opening of the Berlin Wall signified the closing of the Cold War.
The antonym of wall is opening because a wall is a barrier and an opening isn't the way-VLE : )
An opening in a wall to let in air or light is called a window.
An opening in a wall to let in air or light is called a window.
The largest wall of the world
a falangie.
window
Window.
An opening in a wall or floor is a safety hazard and must be either covered or guarded.
An opening in a wall is typically called a doorway or an entrance. It can also be referred to as a portal or an aperture.