Old Norse
From Tardis Wiki, the free Doctor Who reference
Old Norse was a language spoken by the Vikings. "Frey" meant master in Old Norse. (PROSE: The Spear of Destiny)
In Old Norse, there was one word which meant both blue and black, which led to confusion when translated to other languages. An example of this is in the name Harald Bluetooth, who really had a black tooth. (AUDIO: The Destroyer of Delights)
