coin box

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Also see: box

Concise Oxford English Dictionary © 2008 Oxford University Press:
coin/kɔɪn/

▶noun

• 1 a flat disc or piece of metal with an official stamp, used as money.

  ■ money in the form of coins.

• 2 (coins) one of the suits in some tarot packs, corresponding to pentacles in others.

▶verb

• 1 make (coins) by stamping metal.

  ■ Brit. informal earn (large amounts of money) quickly and easily: the company was coining it in.

• 2 invent (a new word or phrase).

– phrases
pay someone back in their own coin retaliate by similar behaviour.
to coin a phrase said when introducing a new expression or a variation on a familiar one.

– derivatives
coiner noun.

– origin ME: from OFr. coin ‘wedge, corner, die’, coigner ‘to mint’, from L. cuneus ‘wedge’.