reo kōkuhu
1. (noun) introduced language, foreign language, colonists' language.
Ki te kīia tō reo e te reo kōkuhu he ngoikore, i te mea kāore e taea e ia te ao hou te kōrero, me kī atu koe, "Aua atu. Hei aha mā mātou." (HM 2/2009:10) / If it is stated by the introduced language that your language is weak, that it's not able to talk about the modern world, you should say, "So what. That doesn't matter to us."