lollipop (n.)youdaoicibaDictYouDict[lollipop 词源字典]
1784, lolly-pops "sweetmeats, soft candy," perhaps related to loll "to dangle" (the tongue) + pop "strike, slap." Or the first element may be northern dialectal lolly "the tongue." Meaning "hard candy on a stick" is from 1920s.[lollipop etymology, lollipop origin, 英语词源]