hickie (n.)youdaoicibaDictYouDict[hickie 词源字典]
"love bite; mark on skin made by biting or sucking during foreplay or sex," 1934; earlier "pimple, skin lesion" (c. 1915); perhaps a sense extension and spelling variation from earlier word meaning "small gadget, device; any unspecified object" (1909, see doohickey, still used in this sense).[hickie etymology, hickie origin, 英语词源]