Crossword Genius

Fence one with blue and white exterior (8)

Ross

I believe the answer is:

palisade

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(Other definitions for palisade that I've seen before include "Fence of wooden stakes" , "Fence consisting of stakes" , "Line of stakes as a defence" , "A side lap (anag)" , "Strong fence, for defence" .)

I've seen this clue in The Independent.
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