[Perhaps from dialectal lolly, tongue (from LOLL, to dangle the tongue) + POP¹, or from Romani (British dialect) loli phabai, red apple, candy apple : lolo, loli, red (from Middle Indic lohita-, from Sanskrit, from loha-, red; see reudh- in the Appendix of Indo-European roots) + phabai, apple (of Indic origin; akin to Torwali (Dardic language of northwest Pakistan) babaí).]