everclear

From a brand name, from ever +‎ clear.

everclear (uncountable)

1. (chiefly US, dated, humorous, genericized trademark) Any home-brewed distilled grain alcohol, especially one with a very high concentration of alcohol (such as 90-some percent, that is, 180-some proof); but generally not one rife with impurities or adulterants.

   Synonym: jet fuel

   Coordinate terms: (iffier purity) rotgut, red-eye, hooch

   Near-synonyms: white lightning, moonshine, mountain dew