The most common and most likely answer to this crossword clue is the 4 letter word FILO
F
I
L
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More clues leading to the result FILO
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The cryptic/wordplay part
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What does FILO mean?
FILO noun- A type of dough, originating in Mediterranean cuisine, that is used in thin layers to make pastries (such as baklava and apple strudel) and pies and becomes very flaky when cooked.