The most common and most likely answer to this crossword clue is the 8 letter word DUNGAREE
D
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More clues leading to the result DUNGAREE
Buddy explains!

The straight part
We know that "fabric" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fabric = dungaree.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 DUNGAREE mean?
DUNGAREE noun- Heavy denim fabric, often blue; blue jean material.
- Pants or overalls made from such fabric.
- Heavy denim pants or trousers, usually with bib and braces, worn especially as work clothing.