Definitions for "Staircase"
A flight of stairs with their supporting framework, casing, balusters, etc.
A stretch of river where the water pours over a series of drops that resemble a staircase.
This term is often reserved for the stairs themselves: the steps, railings and landings; though often it is used interchangeably with "stairs" and "stairway".
Your room may come off a Staircase. Look for the number above the entrance to the staircase. You would describe where you live as 12:2 (if you lived in the College Office).
Traditionally, the student rooms in colleges were arranged around staircases rather than along corridors, with just a few rooms leading off each landing.
a major focal point in a room and many times is the first