shinplaster (n.)youdaoicibaDictYouDict[shinplaster 词源字典]
also shin-plaster, piece of paper soaked in vinegar and used to treat sore legs, from shin (n.) + plaster (n.). In U.S. history, jocularly or as a term of abuse for "devalued low-denomination paper currency" (1824).[shinplaster etymology, shinplaster origin, 英语词源]