Noun
a spiral staircase
spiral staircase (plural spiral staircases)
A staircase in the form of a helix.
Many a man may look respectable, and yet be able to hide at will behind a spiral staircase. P. G. Wodehouse
I remember in 37 when trolley cars were so big in New York. It was five cents for a ride... There used to be open-air buses, and you could go up a spiral staircase and sit up on top. Those were great, great days. Tiny Tim
He is crooked enough to hide behind a spiral staircase. Anne McCaffrey
Also there is a spiral staircase winding upwards between the inner and outer wall and connecting the galleries. Source: Internet
Based on Nansen's observations of ocean currents recorded during the Fram expedition, Ekman concluded that the effect of wind on the sea's surface produced currents which "formed something like a spiral staircase, down towards the depths". Source: Internet
An easy way to duplicate objects around a specified axis with a specified offset – to make a spiral staircase, for example. Source: Internet