## Meanings
1. A piece of money made of metal, usually round and flat.
2. To invent a new word or phrase.
3. To make coins by stamping metal.
4. Money in general, in informal use.

## Examples
- She dropped a few coins into the beggar's cup.
- He coined the term to describe the new trend.
- The mint coins millions of pieces every year.
- She spent some serious coin on that car!

## Derived Forms
- altcoin
- bitcoin
- centicoin
- coin-in-the-slot
- coin-operated
- coin-sword
- coin-tosser
- coinable
- coinage
- coinbase
- coinbox
- coiner

## Roots and Affixes
- Root: coyn
- Root: coigne
- Root: cuneus

## Etymology
From Middle English coyn, from Old French coigne (“wedge, cornerstone, die for stamping”), from Latin cuneus (“wedge”). Doublet of coign and cuneus. See also quoin (“cornerstone”). Displaced Middle English mynt, from Old English mynet (whence modern English mint), which was derived from Latin monēta.

## AI Etymology
coin is a verb and noun. It is from Middle English coyn, from Old French coigne (“wedge, cornerstone, die for stamping”), from Latin cuneus (“wedge”). Doublet of coign and cuneus. See also quoin (“cornerstone”). Displaced Middle English mynt, from Old English mynet (whence modern English mint), which was derived from Latin monēta. Historical forms in the chain include coyn (Middle English), coigne (Old French), and cuneus (Latin). Current senses include a piece of money made of metal, usually round and flat, to invent a new word or phrase, and to make coins by stamping metal. Derived forms include altcoin, bitcoin, centicoin, coin-in-the-slot, and coin-operated.

## Topics
- Actions & Processes
- Register & Style

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