an easy method of access (upward and downward) composed of a collection of tips
- A flight of stairs using their supporting framework casing balusters etc
- A flight of stairs making use of their supporting framework, casing, balusters, etc.
additionally stair-case, 1620s, originally the enclosure of this stairs, from stair + case (n.2) in its good sense "frame;" compare former window-case, door-case.
Built the graceful horseshoe staircase in the Cour du Cheval Blanc; Napoleon I.