cojones (n.)youdaoicibaDictYouDict[cojones 词源字典]
"courage," literally "balls," 1932, from Spanish cojon "testicle," from Latin coleus, culleus (source of Italian coglione), literally "a leather sack," related to Greek koleos "sheath, scabbard (see cell). In English, first attested in Hemingway.[cojones etymology, cojones origin, 英语词源]