Spitz dog \Spitz" dog"\ [G. spitz, spitzhund.] (Zo["o]l.) A breed of dogs having erect ears and long silky hair, usually white; -- called also {Pomeranian dog}, and {louploup}. Pomeranian \Pom`e*ra"ni*an\, a. Of or pertaining to Pomerania, a province of Prussia on the Baltic Sea. -- n. A native or inhabitant of Pomerania. {Pomeranian dog} (Zo["o]l.), the loup-loup, or Spitz dog.