ˈklōs- noun
: a string of a stair having its upper edge straight and usually parallel with the lower edge so that the outer ends of the steps are entirely enclosed
ˈklōs- noun
: a string of a stair having its upper edge straight and usually parallel with the lower edge so that the outer ends of the steps are entirely enclosed
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012