A guardian or keeper, especially one who has legal responsibility for protecting something or someone.
From Latin 'custos' (guardian, keeper) and Old French 'custode,' referring to one who guards or watches over. The root 'custos' shares origins with English 'custom,' both stemming from the idea of watching or observing repeatedly.
Medieval monasteries used 'custodes' as official guardians of sacred relics—these weren't just any keepers, but specially appointed protectors whose sole job was to prevent theft or desecration, making them the original museum security guards!
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