The most common and most likely answer to this crossword clue is the 6 letter word FAILLE
I've seen this crossword clue in Independent
F
A
I
L
L
E
More clues leading to the result FAILLE
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 FAILLE mean?
FAILLE noun- A fabric woven from silk, cotton, or rayon with slight ribs.