Updated the Oxford dictionary
S T A B L E C O I N
/ˈsteɪ.bəl.kɔɪn/
noun
A cryptocurrency scheme where investors give up their Bitcoin in return for a USD-pegged token - while the issuers use their money to buy Bitcoin, leaving investors with a depreciating digital IOU.
Origin:
early 21st century, from “stable” (ironically implying reliability) + “coin” (to evoke trust), typically managed by centralised entities promising transparency while hoarding hard assets.