rotgut

from WordNet (r) 3.0 (2006)

rotgut
    n 1: any alcoholic beverage of inferior quality

from The Collaborative International Dictionary of English v.0.48

rotgut \rot"gut\, n.
   1. Bad small beer. [Slang]
      [1913 Webster]

   2. Any bad spirituous liquor, especially when adulterated so
      as to be very deleterious. [Slang]
      [1913 Webster]