revenuer
Revenuer (noun) means a government officer whose job is to enforce laws against distilling alcohol illegally.
Etymology
From revenue + -er, reflecting the U.S. Treasury Department's former Bureau of Internal Revenue (a predecessor of the IRS and ATF), because the administrative mechanism for enforcing Prohibition originated in excise tax administration; Wikipedia gives details at Bureau of Alcohol, Tobacco, Firearms and Explosives § History.