The most common and most likely answer to this crossword clue is the 9 letter word POLISHING
I've seen this crossword clue in The Daily Telegraph
P
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Buddy explains!
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 POLISHING mean?
POLISHING verb- To shine; to make a surface very smooth or shiny by rubbing, cleaning, or grinding.
- To refine; remove imperfections from.
- To apply shoe polish to shoes.
- To become smooth, as from friction; to receive a gloss; to take a smooth and glossy surface.
- To refine; to wear off the rudeness, coarseness, or rusticity of; to make elegant and polite.
- The action of the verb to polish.
- (usually in the plural) An extract of partially milled rice.
- That makes shiny or smooth.
- That refines.