The most common and most likely answer to this crossword clue is the 6 letter word REBECK
I've seen this crossword clue in Independent
R
E
B
E
C
K
More clues leading to the result REBECK
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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 REBECK mean?
REBECK noun- An early three-stringed instrument, somewhat like a simple violin only pear shaped, played with a bow and used in Medieval and the early Renaissance eras.