[stair-keys] 
| a flight of stairs with its framework, banisters, etc., or a series of such flights. |
| stair·case (stâr'kās') n. A flight or series of flights of steps and a supporting structure connecting separate levels. Also called stairway. |
staircase stair·case (stâr'kās')
n.
A series of reactions or responses that follow one another in progressively increasing or decreasing intensity, so that a chart shows a continuous rise or fall.
staircase
jaggies
