Definition of "coin"

...the coins were of all countries and sizes - doubloons, and louis d'ors, and guineas, and pieces of eight...

1881–1882, Robert Louis Stevenson, Treasure Island, London, Paris: Cassell & Company, published 14 November 1883

The loss of every present advantage to flesh and blood is repaid in a nobler coin.

1654, H[enry] Hammond, Of Fundamentals in a Notion Referring to Practise, London: […] J[ames] Flesher for Richard Royston, […]

It was the biggest thing in the town, and everybody I met was full of it. They were going to run an over-sea empire, and make no end of coin by trade.

1899 February, Joseph Conrad, “The Heart of Darkness”, in Blackwood’s Edinburgh Magazine, volume CLXV, number M, New York, N.Y.: The Leonard Scott Publishing Company, […], part I, page 199

Boy toy named Troy, used to live in Detroit, big dope dealer money he was getting some coin.

2014, Nicki Minaj, “Anaconda”, in The Pinkprint

For munchies try deep-fried jalapeño coins, jumbo Buffalo wings, and hush puppies with a sweet edge.

2015, Fodor's The Carolinas & Georgia

Spread out four bread and butter pickle coins on top, and sprinkle with onion.

2020, Evan Bloom, Rachel Levin, Eat Something, page 76

Many persons believe that the so-called "dollar of the daddies," weighing 412½ grains (nine tenths fine), having a ratio to gold of "16 to 1" in value when first coined, was the original dollar of the Constitution.

1898 September, Alexander E. Outerbridge Jr., “Curiosities of American Coinage”, in Popular Science Monthly‎, volume 53, D. Appleton & Company, page 601

Not fearing outward force: So ſhall my Lungs / Coine words till their decay, againſt thoſe Meazels

c. 1608–1609 (date written), William Shakespeare, “The Tragedy of Coriolanus”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene i], page 15

Some tale, some new pretense, he daily coined, / To soothe his sister and delude her mind.

1697, Virgil, “Aeneis”, in John Dryden, transl., The Works of Virgil: Containing His Pastorals, Georgics, and Æneis. […], London: […] Jacob Tonson, […], page 1

[...] Tenants cannot coin their Rent juſt at Quarter-day, but muſt gather it up by degrees, and lodge it with them till Pay-day, or borrow it of thoſe who have it lying by them, [...]

1691, [John Locke], Some Considerations of the Consequences of the Lowering of Interest, and Raising the Value of Money. […], London: […] Awnsham and John Churchill, […], published 1692, page 36