noun

• (colloquial) One who drinks alcohol habitually; a drunkard.
  "“Tess is a fine figure o′ fun, as I said to myself today when I zeed her vamping round parish with the rest,” observed one of the elderly boozers in an undertone."
• (UK, Australia, New Zealand, slang) A public house, pub.
  "Zoe’s dad went to the same boozer every day, a flat-roofed pub on the edge of the estate, with the cross of St George hanging above the door and a ferocious-looking Rottweiler tied up outside."
• (UK, military, obsolete) A World War II fighter radar detector, fitted to British bombers.
• (Africa) A vehicle equipped with tanks for supplying water to remote locations.
  "2010 June 8, Kenya National Assembly Official Record (Hansard), page 2, Mr. Mututho: Mr. Speaker, Sir, the Assistant Minister should assure the people of Vihiga that they will get a water boozer because the sick people are not party to this complication. Could he assure the people that he can send a boozer in his capacity even if he cannot supply power or a standby generator, so that they can have a small well?"