staircase /ˈstɛɹˌkeɪs/noun 3verb 2forms 3phrases 2 noun3 •A flight of stairs; a stairway.I was on the staircase by the bell / Blinded by the black magician's spell — 2011 •A connected set of flights of stairs; a stairwell. •A set of locks (enclosed sections of waterway) mounted one above the next. verb2 •To increase one's share in a co-ownership.It is a good idea to make plans for staircasing when you first buy your shared ownership home. — 2018 •To modify (a signal, a graph, etc.) to reduce a smooth curve to a series of discrete steps.This leads to much smoother reconstructions in regions of moderate gradient and thus prevents staircasing. — 2006 formsstaircased · staircasing · staircases Phrases with staircase everlasting staircaseA prison treadmill. staircase witThe thinking of an idea or course of action too late to use it effectively, or the tendency to do so.