The most common and most likely answer to this crossword clue is the 7 letter word FRAISES
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The straight part
We know that "palisades" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case palisades = fraises.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 FRAISES mean?
FRAISES noun- A type of palisade placed for defence around a berm; a defence consisting of pointed stakes driven into the ramparts in a horizontal or inclined position.
- A ruff worn (especially by women) in the 16th century.
- An embroidered scarf with its ends crossed over the chest and pinned, worn (especially by women) in the 19th century.
- A fluted reamer for enlarging holes in stone; a small milling cutter.
- A tool for cutting the teeth of a timepiece's wheel to correct inaccuracies.
- A large thick pancake with slices of bacon in it.
- A stylized strawberry with leaves.