The most common and most likely answer to this crossword clue is the 5 letter word RUNES
I've seen this crossword clue in Independent
R
U
N
E
S
Buddy explains!

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 RUNES mean?
RUNES noun- A letter, or character, belonging to the written language of various ancient Germanic peoples, especially the Scandinavians and the Anglo-Saxons.
- A Finnish or Scandinavian epic poem, or a division of one, especially a division of the Kalevala.
- A letter or mark used as mystical or magic symbol.
- A verse or song, especially one with mystical or mysterious overtones; a spell or an incantation.
- A roun (secret or mystery).
- In the Go programming language, a Unicode code point.