Plural of coffer; large boxes or chests for storing money and valuables, or metaphorically, the financial resources or treasury of an organization.
From Old French 'coffre,' from Latin 'cophinus' meaning 'basket,' originally referring to actual wooden chests, then extended to mean treasuries or financial reserves.
Medieval castles had literal stone coffers built into walls to protect treasure—you can still see them in old fortifications, and now the word is used anytime someone talks about a government or company's money supply.
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