A person who manufactures or works with colberts, which are types of armor or defensive clothing.
From 'colbert' (a close-fitting coat of mail or protective garment), possibly from a proper name or craft origin. The '-er' suffix denotes someone who makes or works with the item.
A colberter was a medieval craftsperson whose job was to armor soldiers—and their work was literally life-or-death, since a poorly made piece of armor could get someone killed in battle!
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