The most common and most likely answer to this crossword clue is the 7 letter word ELEGANT
I've seen this crossword clue in The Daily Telegraph
E
L
E
G
A
N
T
More clues leading to the result ELEGANT
- Polished table leg, antagonising hosts
- Stylish member in neat pants
- Tasteful European wants the glove from Dior?
- European six-footer tackles prop with style
- A gentle eccentric, dignified and graceful
- Fashionable, say, wearing flowing mantle cut away at the front
- Ingenious and simple jumbo’s good for public house
- Graceful and neat, oddly concealing a limb
- Polished and returned jade in the box
- Stylish top from Ellesse on six- footer
Buddy explains!

The straight part
We know that "showing refinement" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case showing refinement = elegant.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 ELEGANT mean?
ELEGANT adjective- Characterised by or exhibiting elegance.
- Characterised by minimalism and intuitiveness while preserving exactness and precision.
- Fine; doing well.