• noun a piece of metal money, Coins form a very small part of the total money in circulation


  • (written as Coin)
    A monetary unit having a value as currency defined by the government, typically in the form of a flat disk and made of metal. While paper or fabric-based money or electronic payments are more often used for transactions or purchases due to greater portability, coins in the modern era are still used to exchange fractional currency units.

Information & Library Science

  • noun a small, flat piece of metal made and stamped by a government to be used as money
  • verb to make coins from metal
  • verb to invent words or phrases


  • acronym forcounterinsurgency
    (written as COIN)
  • noun action taken to destroy an insurgency.


Origin & History of “coin”

Latin cuneus meant ‘wedge’ (from it we get cuneiform ‘wedge-shaped script’). It passed into Old French as coing or coin, where it developed a variety of new meanings. Primary amongst these was ‘corner-stone’ or ‘corner’, a sense preserved in English mainly in the now archaic spelling quoin. But also, since the die for stamping out money was often wedge-shaped, or operated in the manner of a wedge, it came to be referred to as a coin, and the term soon came to be transferred to the pieces of money themselves.