noun
stairwell
noun
1
The vertical shaft in a building that contains a staircase.
"The fire alarm echoed through the stairwell."
How to Use Stairwell
Learner’s notesIn plain EnglishThe enclosed space that a staircase runs through.
Easily confused with
Word Forms
stairwells plural
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The fire alarm echoed through the _____.
Etymology
From stair plus well, in the sense of a vertical shaft.