Here are the possible solutions for type of staircase clue
Answer
Clue
Relevancy
circular
Clue
Type of staircase
Definition
in the shape of a circle
spiral
Clue
Type of staircase
any
Clue
"... card, ___ card" (Last week: The two diagonally hidden 18-letter titles were "Up the Down Staircase" and "Upstairs, Downstairs." The latter answer turned downward at the D of "Downstairs.")