- The stairwell is a part of a building where the staircase is located.
An example of a stairwell is the location in a building where you go if you want to use the stairs.
stairwell definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a vertical shaft (in a building) containing a staircase
stairwell definition by American Heritage Dictionary
A vertical shaft around which a staircase has been built.