extortion (n.)youdaoicibaDictYouDict[extortion 词源字典]
c. 1300, from Latin extortionem (nominative extortio) "a twisting out, extorting," noun of action from past participle stem of extorquere "wrench out, wrest away, to obtain by force," from ex- "out" (see ex-) + torquere "to twist" (see torque (n.)).[extortion etymology, extortion origin, 英语词源]