köken: First attested in the Dong'ui bogam (東醫寶鑑 / 동의보감), 1613, as Early Modern Korean 므은드레 (Yale: muuntuley), from unattested Middle Korean *므ᅀᅳᆫ드레 (Yale: *muzuntuley). Compare Yukjin Korean 무슨둘레 (museundulle, “dandelion”), Jeolla Korean 머심달레 (meosimdalle, “dandelion”).
köken: Uncertain. Probably related to German Pampelblume, Pompelblume, see today's German Pappenstiel. Possibly also related to Old Czech pléška (“dandelion”), which is derived from pleš (“baldness”).
In the literal sense inherited from Middle High German lewenzan, equivalent to Löwe (“lion”) + -n- + Zahn (“tooth”). The botanic sense is a 16th-century calque of Latin dēns leōnis, whence also English dandelion.