newel/ˈnjuəl; ?@ ˈnu:əl; `nuəl/ n1 central pillar of a winding staircase （螺旋式楼梯的）中心柱.2 (also `newel post) post supporting the handrail of a stair at the top or bottom of a staircase （楼梯顶部或底部的）端柱.
牛津英汉双解词典