The most common and most likely answer to this crossword clue is the 6 letter word FOETUS
I've seen this crossword clue in The Daily Telegraph
F
O
E
T
U
S
More clues leading to the result FOETUS
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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 FOETUS mean?
FOETUS noun- An unborn or unhatched vertebrate showing signs of the mature animal.
- A human embryo after the eighth week of gestation.