The most common and most likely answer to this crossword clue is the 4 plus 4 letter word HALF MAST
I've seen this crossword clue in The Guardian
H
A
L
F
M
A
S
T
More clues leading to the result HALF MAST
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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 HALF MAST mean?
HALF MAST noun- The lowered position, half the height of a mast, at which a flag is flown when mourning, especially expressing respect for the dead.
- (by extension) The lowered position of any thing.
- (of a man) The state of being partially erect