Staircase
91spiral staircase — noun A staircase in the form of a helix. Syn: spiral stairs, circular stairs, helical stairs …
92Bowditch law staircase phenomenon — Bow·ditch law, staircase phenomenon (boґdich) [Henry Pickering Bowditch, American physiologist, 1840–1911] see all or none, under A, and see treppe …
93moving staircase — n old fashioned an ↑escalator …
94spiral staircase — n a set of stairs arranged in a circular pattern so that they go around a central point as they get higher …
95moving staircase — noun count OLD FASHIONED an ESCALATOR …
96spiral staircase — noun count a set of stairs shaped like a SPIRAL …
97everlasting staircase — obsolete a treadmill The degree of arduousness was regulated by a jailor through a screw; and see screw2: The convicts names for the treadmill were expressive: the everlasting staircase, or, because the stiff prison clothes scraped… …
98double staircase — /ˈdʌbəl stɛəkeɪs/ (say dubuhl stairkays) noun a formal staircase with sets of stairs which meet on a common landing …
99spiral staircase — /spaɪrəl ˈstɛəkeɪs/ (say spuyruhl stairkays) noun a staircase whose steps rise to form a spiral around a central axis. Also, spiral stairway …
100moving staircase — ☆ moving staircase or moving stairway n. ESCALATOR …