Source : Webster's Revised Unabridged Dictionary (1913)

Stairway \Stair"way`\, n.
   A flight of stairs or steps; a staircase. ``A rude and narrow
   stairway.'' --Moore.

Source : WordNet®

stairway
     n : a way of access consisting of a set of steps [syn: {staircase},
          {stairs}, {steps}]