simple past tense and past participle of staircase

A flight of stairs; a stairway. / A connected set of flights of stairs; a stairwell. / A set of locks (enclosed sections of waterway) mounted one above the next.

(transitive) To modify (a signal, a graph, etc.) to reduce a smooth curve to a series of discrete steps. / (real estate) To increase one's share in a co-ownership.

plural of staircase

The design and/or installation of a staircase.

present participle of staircase

plural of staircase lock

A set of locks on a waterway canal which rise steeply, and consisting of lock gates where the top gate of one lock is also the bottom gate of the next lock, not having a pound between each level.

plural of spiral staircase

(rare, idiomatic) Thinking of an idea or course of action too late to use it effectively, or the tendency to do so.