Al-kuhl, the kohl, was antimony sulfide ground impalpable, the eyeliner of Egypt and Mesopotamia, credited with protecting eyes from glare and infection. The word entered Europe with the Toledo translations alongside algebra and algorithm, al- the fingerprint of Arabic science. Alchemists, needing a term for the most refined part of a substance, extended alcohol from the finest powder to any distilled essence; Paracelsus applied it to the spirit of wine, alcohol vini, and by about 1753 alcohol alone meant the intoxicating ingredient. Chemistry then harvested the suffix for the whole -ol family, ethanol, methanol, glycol, an Egyptian cosmetic presiding over the periodic table.
The folk reading, alcohol from al-ghawl, the ghoul that clouds reason, survives because it is truer than the truth: the experience of possession by drink demanded a demon in the word, and Arabic supplied one that sounds identical. The documented root says powder; the folklore says spirit, and the folklore is technically right about the alchemists, who called the distillate the spirit precisely because it was the thing's invisible essence. The bottle got named by its finest part, the ghost in the makeup.
The claim: alcohol's journey, from protective eye medicine to essence to intoxicant, is the pharmacopoeia wing's master pattern, refinement as the moment of danger, the raw plant manageable, the distilled essence addictive, the isolate lethal, kohl to ethanol to fentanyl, one technology of concentration refining the margin between remedy and poison to zero. Verdict: the archive's Pharmakon file states the doctrine, and this entry is its longest exhibit. The ancients drank wine. The alchemists learned to distill. Everything since, including the modern overdose ledger, is the story of the still. The word remembers what the label forgot: it was always the essence that got you.
If alcohol means the finest essence, essence of what, and why did the word forget the eyes?