Below are possible answers for the crossword clue Castle protector, maybe.
4 letter answer(s) to castle protector, maybe
PAWN
(chess) the least powerful piece; moves only forward and captures only to the side; it can be promoted to a more powerful piece if it reaches the 8th rank
a person used by another to gain an end
an article deposited as security
borrowing and leaving an article as security for repayment of the loan
leave as a guarantee in return for money; "pawn your grandfather's gold watch"
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