ラバらばFreq.FrequencyTop 50,000Meanings1nounlavaItalian-derived loanword for lava; used in geological and everyday contexts. The native Japanese term is 溶岩 (ようがん).from ItalianSee also: 溶岩火か山ざんからラバが流ながれ出でた。Lava flowed out from the volcano.