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Definition of staircase
staircase
/ˈstɛər.keɪs/
stair · case
Plural:staircases
staircase Lexical Profile
CEFR
B1
Grade
3
Tier
1
Usage
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WWF
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• noun
1
A flight or series of stairs, including its supporting structure, handrails, and surrounding framework, designed to connect different floor levels.
Example
"She walked slowly up the grand wooden staircase to the second floor of the historic mansion."
Synonyms
View all synonyms for staircaseWord Origin & Etymology
First recorded in the early 17th century. Formed as a compound of 'stair' (from Old English 'stǣger', meaning 'flight of steps') and 'case' (referring to the framework or structure enclosing the stairs).
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Staircase. In Wordmom Dictionary. Retrieved Oct 17, 2026, from https://wordmom.com/dictionary/staircase