Cryptic crossword clue
Worker with fair, tortuous folds covering muscle 10

The most common and most likely answer to this crossword clue is the 10 letter word ROUSTABOUT

I've seen this crossword clue in The Guardian
R
O
U
S
T
A
B
O
U
T

Buddy explains!

The straight part
We know that "Worker with fair" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case worker with fair = roustabout.
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 ROUSTABOUT mean?

ROUSTABOUT noun
  1. An unskilled laborer, especially at an oilfield, at a circus or on a ship, 19th c.

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