adj

• (archaic) Of or from a foreign country; not indigenous or native; alien, foreign.
  "[W]e haue bꝛokẽ thy ſtatutes ⁊ cõmaundementes agayne, ⁊ mengled o^ꝛ ſelues wᵗ the vnclẽnes of the outlandiſh heithen."
• (by extension)
  "I believe, Lady, your Ladyſhip obſerved a young VVoman at Church yeſterday at Even-ſong, vvho vvas dreſt in one of your outlandiſh Garments; I think I have ſeen your Ladyſhip in ſuch a one. Hovvever, in the Country, ſuch Dreſſes are / Rara avis in Terris, nigroq; ſimillima Cycno, / That is, Madam, as much to ſay, / A rare Bird upon the Earth, and very like a black Svvan."
• (by extension)
  "The rock star wore black with outlandish pink and green spiked hair."
• (by extension)
  "It will be very convenient to have a medical man—if he is clever—in one's own parish. I get dreadfully nervous sometimes, living in such an outlandish place; and Sherton is so far to send to."

noun

• (obsolete) A foreign language.
  "[H]ow soon God from Heaven had sent His fiery tongues upon His Apostles, the devil from hell presently sent for his fiery tongues, and put them in the mouths of his apostles, to disgrace and scoff at those of God's sending. […] These good fellows have been at it, and now they can speak nothing but outlandish. Some little broken Greek or Latin they had, and now out it comes."