The most common and most likely answer to this crossword clue is the 8 letter word JALOUSIE
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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 JALOUSIE mean?
JALOUSIE noun- (naval architecture) A component in a ventilation system.
- Upward sloping window slats which form a blind or shutter, allowing light and air in but excluding rain and direct sun.
- A pastry with the upper side sliced before final baking to resemble a wooden slatted blind.