The most common and most likely answer to this crossword clue is the 5 letter word NEWEL
N
E
W
E
L
More clues leading to the result NEWEL
- Column that’s fresh verges on exceptional
- Part of staircase in modern wing
- Sounds like a strange letter in the post
- Feature of staircase in modern wing
- Column seen in flight
- Post from county town returned, having exchanged partners
- English lecturer’s first to go after recently instituted post
- In-flight column airline welcomed in part
- Post union strike row — compromise deal terms
Buddy explains!

The straight part
We know that "Feature of staircase" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case feature of staircase = newel.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does NEWEL mean?
NEWEL noun- A central pillar around which a staircase spirals.
- A sturdy pillar at the top or bottom of a flight of stairs, supporting the handrail.
- A novelty; a new thing.