Coin(redirected from paid back in their own coin)
Also found in: Dictionary, Thesaurus, Medical, Financial, Encyclopedia.
COIN, commerce, contracts. A piece of gold, silver or other metal stamped by authority of the government, in order to determine its value, commonly called money. Co. Litt. 207; Rutherf. Inst. 123. For the different kinds of coins of the United States, see article Money. As to the value of foreign coins, see article Foreign Coins.