Cryptic crossword clue
Young woman hiding deficiency relating to tongue 7

The most common and most likely answer to this crossword clue is the 7 letter word GLOSSAL

I've seen this crossword clue in The Times
G
L
O
S
S
A
L

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The straight part
We know that "relating to tongue" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case relating to tongue = glossal.
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 GLOSSAL mean?

GLOSSAL adjective
  1. Of, or relating to the tongue.

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