Dandelion
The dandelion takes its name not from a lion's mane or golden colour, but from its teeth. The word enters English in the fifteenth century as a borrowing of Old French *dent de lion*, literally 'tooth of the lion' — a reference to the deeply serrated, jagged-edged leaves that early herbalists thought resembled a row of lion's fangs. The plant's botanical genus *Taraxacum* tells a different story altogether, but the vernacular name stuck, and the lion's tooth has been with English ever since.
The Name's Journey
The earliest attested English form appears in the *Agnus Castus* herbal of around 1425, where it is recorded as *dent de lion* in recognisably French spelling. By the late fifteenth century, anglicised spellings such as *dandelyon* appear in medical and botanical texts. The form *dandelion* stabilises through the sixteenth century as English orthography hardens around it.
Old French *dent de lion* is itself a calque — a loan translation — of Medieval Latin *dens leonis*, the name given by physicians and herbalists writing in the learned tradition. The Latin form appears in twelfth- and thirteenth-century herbals, including works associated with the School of Salerno, the influential southern Italian centre of medieval medicine. It is through this medical Latin that the name spread across Europe: *dens leonis* in Latin becoming *dent de lion* in French, *Löwenzahn* in German, *diente de león* in Spanish, and *dandelion* in English, all by translation rather than borrowing.
Root Analysis
The Latin *dens* (genitive *dentis*, 'tooth') descends from Proto-Indo-European \*h₁dent-*, the reconstructed root meaning 'tooth'. This root is extraordinarily well-preserved across the Indo-European family. Greek has *odous* (genitive *odontos*), giving English *orthodontics* and *mastodon*. Sanskrit has *dant-*. Old English had *tōþ*, which survives as *tooth* — itself a cognate, though the forms have drifted far apart.
The Latin branch of \*h₁dent-* gives English a cluster of learned borrowings: *dental*, *dentist*, *dentition*, *indent* (originally to cut teeth-like notches into a document — a deed cut with a jagged edge so the two halves could be matched), and *dandelion* itself, the most disguised member of the family. *Trident* carries the root too: Latin *tridens* means 'three-toothed', from *tri-* (three) and *dens*.
French: Pissenlit
French retains *pissenlit* alongside the more formal *dent de lion*, and *pissenlit* is far more candid about the plant's properties. It means 'piss-the-bed', a direct reference to the dandelion's well-documented diuretic effect. The plant was used medicinally across medieval and early modern Europe as a treatment for liver and kidney complaints, and its diuretic action was known to every herbalist and most children. English has its own folk equivalent, 'piss-a-bed', recorded from at least the sixteenth century, though it has largely retreated from common use while the French term remains current.
German: Löwenzahn
German *Löwenzahn* — 'lion's tooth' — is a straightforward calque of the Latin *dens leonis*, following the same translation path as the English name. It demonstrates how thoroughly Medieval Latin herbalism standardised plant names across Europe: from Spain to Germany, educated speakers reached for the same image.
Irish and Gaelic
Irish *caisearbhán* (sometimes *caisiarbhán*) takes a different path entirely. The name derives from *cais*, related to bitterness, and *bán*, white — a reference to the plant's milky sap and bitter taste rather than any lion imagery. Scottish Gaelic has *beàrnan Brìde*, 'notched plant of Bridget', linking the plant to St Brigid's feast in early February, when the first dandelions of the year were traditionally observed.
Cultural and Medicinal Context
The dandelion's many names reflect the plant's prominence in pre-modern medicine and daily life. It was among the most used plants in European folk medicine: the leaves eaten as a spring tonic and diuretic, the roots roasted as a coffee substitute, the flowers fermented into wine. Because it was so widely used, it accumulated names in every language — each name recording a different observation about its properties, appearance, or seasonal behaviour.
The lion's-tooth naming, however, won out in the formal botanical tradition because it was tied to the prestige of Latin herbalism. The Medical Latin name *dens leonis* gave the plant a learned identity that survived the transition from manuscript to printed herbal, and from there into the vernacular languages of Europe.
Cognates and Relatives
Dandelion's cognates through \*h₁dent-* include *dental*, *dentist*, *dentin*, *dentifrice*, *indent*, *indenture*, *trident*, *toothsome*, and *tooth* itself. The word *dandelion* is therefore a cousin of the word *tooth* — the same ancient root, one path through Latin and French, one through Germanic, arriving at two words that look nothing alike but name the same part of the body.