Found in the Arabic al-kuḥl, whose component al- refers to the connector el, and kuḥl, originally pointing to a chemical solution, based on the mineral stibnite, capable of producing antimony, applied to the aesthetics of the eyes as a cosmetic, observed in the records of the Royal Spanish Academy as an extinct term that was adapted to the Spanish as kohl. Likewise, it appears to preserve the meaning mentioned in the lines of the Book of Ezekiel, in Ezekiel 23:40, in the Hebrew as kāḥal. From this specific application, it extends to a general interpretation to understand the product resulting from a distillation process.