Crossword Genius

Bill when Charles will reign? (6)

Ross

I believe the answer is:

poster

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'bill' is the definition.
(synonyms)

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(Other definitions for poster that I've seen before include "Large decorative printed picture" , "Large sheet of paper advertising something" , "'Notice, placard (6)'" , "Printed advert" , "Large advert" .)

I've seen this clue in The Guardian.
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