noun
staircase
STEHR-kays
noun
1
A full flight of stairs together with its structure and railing.
"The grand staircase swept up to the ballroom."
How to Use Staircase
Learner’s notesIn plain EnglishA set of stairs, typically indoors, including its supporting structure.
Common mistake
A "staircase" usually refers to the physical structure (steps plus rail), while "stairwell" is the vertical shaft it sits in.
Easily confused with
Word Forms
staircased past tense, staircases plural, staircases singular
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The grand _____ swept up to the ballroom.
Etymology
A compound of stair and case, in the sense of an enclosing structure.