Crossword Genius

A clear field (5)

Ross

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3

5

plain

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'a clear' is the definition.
(I've seen this before)

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(Other definitions for plain that I've seen before include "Simple - flatland" , "Straightforward" , "lament" , "Undecorated; clear" , "Clear, candid" .)

I've seen this clue in the Evening Standard.
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