Here are the possible solutions for staircase pillar clue
Answer
Clue
Relevancy
newel
Clue
Staircase pillar
Spiral-staircase pillar
Definition
a post supporting the handrail of a 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.")