Vertical Shaft in a Building With Flights of Steps

This page is the CodyCross answer for the clue below from Small World, Group 683, Puzzle 2 (Pixies and Elves).

Question is: Vertical Shaft in a Building With Flights of Steps

and the answer is: STAIRWELL

Word Meaning:

STAIRWELL — A shaft in a multi-story building enclosing a stairway or staircase.

Definitions from Wiktionary.