柯林斯詞典stairwell /?st???w?l/ (stairwells) 1. N-COUNT The stairwell is the part of a building that contains the staircase. 樓梯井 返回 stairwell劍橋詞典a long , vertical passage through a building around which a set of stairs is built （建筑物內(nèi)的）樓梯井 返回 stairwell