fusel oilfu·sel oil
Origin of fusel oilGerman fusel, inferior liquor ; from Classical Latin fusilis, fusil
Origin of fusel oilGerman Fusel, bad liquor, from Low German.
(plural fusel oils)
The word "fusel" comes from German Fusel, which is used to refer to low-quality alcoholic beverages in general, especially to inferior wines and spirits distilled with inadequate equipment.