The most common and most likely answer to this crossword clue is the 3 letter word nan
I've seen this crossword clue in The Guardian
n
a
n
More clues leading to the result nan
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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 nan mean?
nan noun- A mother of someone's parent.
- A female ancestor or progenitor.
- A girl or an unmarried young woman; maiden.
- A female servant or cleaner (short for maidservant).
- A virgin, now female but originally one of either gender.
- An effeminate man, especially a homosexual.
- A woman or girl employed to care for children
- A type of round, flat bread baked in a tandoor popular in South and Central Asian cuisine.