Ransom
Ransom is the practice, usually considered a crime, of holding a prisoner or item in order to extort money or property to secure their release. It also refers to the sum of money paid, or the act of paying money, to secure a captive's freedom.
When ransom means "payment", the word comes via French rançon (from Old French "ranson") from Latin redemptio, 'buying back'; compare "redemption".
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