[stair] 
,| 1. | one of a flight or series of steps for going from one level to another, as in a building. |
| 2. | stairs, such steps collectively, esp. as forming a flight or a series of flights: I was so excited I ran all the way up the stairs. |
| 3. | a series or flight of steps; stairway: a winding stair. |
| stair (stâr) n.
[Middle English, from Old English stǣger; see steigh- in Indo-European roots.] |
