The most common and most likely answer to this crossword clue is the 6 letter word BOWMAN
I've seen this crossword clue in The Guardian
B
O
W
M
A
N
More clues leading to the result BOWMAN
Buddy explains!
The straight part
We know that "Archer/who’s on the fiddle" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case archer/who’s on the fiddle = bowman.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 BOWMAN mean?
BOWMAN noun- A man who uses a bow; an archer.
- The person, in a team or among oarsmen, positioned nearest the bow.