Wine (vinum) is so called because it is a drink that quickly refills the veins (venas)with blood. Others call it Lyaeus, because it loosens (solvat) us from our cares. The ancients called wine (vinum) venom (venenum); but after poison from a deadly sap was discovered, they called the one wine, and the other venom.
Vinum inde dictum quod eius potus venas sanguine cito repleat. Hoc alii, quod nos cura solvat, Lyaeum appellant. Veteres vinum venenum vocabant; sed postquam inventus est virus letiferi sucus, hoc vinum vocatum, illud venenum.
—Isidore, Etymologicae 20.3.2