IPA: /ˈstɛrˌwɛl/
KK: /ˈstɛrˌwɛl/
A vertical space or area in a building where a staircase is located, allowing people to move between different floors.
The fire escape was located in the stairwell, providing a safe exit from the building.
Stairwell → It is formed from "stair" (from Old English *stæger*, meaning a step or series of steps) and "well" (from Old English *wella*, meaning a spring or source). The word "stairwell" refers to a vertical space or passage that contains stairs, serving as a source for movement between different levels.
Think of a 'stair' as a step and a 'well' as a source — a stairwell is a source of steps that connects different floors.
No commonly confused words.