The most common and most likely answer to this crossword clue is the 6 letter word NELSON
I've seen this crossword clue in The Daily Telegraph
N
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L
S
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More clues leading to the result NELSON
Buddy explains!
The straight part
We know that "You’ll find this admiral in the hold" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case you’ll find this admiral in the hold = nelson.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 NELSON mean?
NELSON noun- A score of 111, sometimes considered to be unlucky.
- A wrestling hold in which a wrestler's arm is locked behind his back.