stairwell

n part of a building containing the staircase; space for the stairs 楼梯井（建筑物的楼梯占用的部分）.

staging post, stagnancy, stagnant, stagnate, stagnation, stagy, staid, staidly, staidness, stain, stained glass, stainless, stainless steel, stair, stair-carpet, stair-rod, staircase, staircase (also `stairway), stairs, stairway, stake, stake-out, stalactite, stalagmite, stale, stalemate, staleness, stalk, stalker, stall, stall-holder, stallion, stalwart, stalwartly, stalwartness, stamen, stamina, stammer, stammerer, stammeringly,