'Stair' definitions:

Definition of 'stair'

From: WordNet
noun
Support consisting of a place to rest the foot while ascending or descending a stairway; "he paused on the bottom step" [syn: step, stair]

Definition of 'Stair'

From: GCIDE
  • Stair \Stair\ (st[^a]r), n. [OE. steir, steyer, AS. st[=ae]ger, from st[imac]gan to ascend, rise. [root]164. See Sty to ascend.]
  • 1. One step of a series for ascending or descending to a different level; -- commonly applied to those within a building. [1913 Webster]
  • 2. A series of steps, as for passing from one story of a house to another; -- commonly used in the plural; but originally used in the singular only. "I a winding stair found." --Chaucer's Dream. [1913 Webster]
  • Below stairs, in the basement or lower part of a house, where the servants are.
  • Flight of stairs, the stairs which make the whole ascent of a story.
  • Pair of stairs, a set or flight of stairs. -- pair, in this phrase, having its old meaning of a set. See Pair, n., 1.
  • Run of stairs (Arch.), a single set of stairs, or section of a stairway, from one platform to the next.
  • Stair rod, a rod, usually of metal, for holding a stair carpet to its place.
  • Up stairs. See Upstairs in the Vocabulary. [1913 Webster]