n.
Pronunciation: ' ster
Function: noun
Etymology: Middle English steir, from Old English st ǣ ger; akin to Old English & Old High German st ī gan to rise, Greek steichein to walk
Date: before 12th century
1 : a series of steps or flights of steps for passing from one level to another ― often used in plural but singular or plural in construction <a narrow private stair s ― Lewis Mumford>
2 : a single step of a stairway