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English definition of “stair”

stair

noun uk   /steər/ us    /ster/
stairs [plural] A2 a set of steps that lead from one level of a building to another: Go up the stairs and her office is on the right. I had to climb a steep flight (= set) of stairs to her front door. He stood at the foot (= bottom) of the stairs and called out, "Breakfast's ready!" [C] one of the steps in a set of steps that lead from one level of a building to another: The top stair creaked as she went upstairs and the noise woke up her mother. [S] old use or literary a set of stairs: He climbed the wooden stair and knocked on his grandfather's door.
(Definition of stair from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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