Here are some possible ways to describe a "big hill" in Maori:
* Maunga nui: This literally translates to "big mountain," but can be used for a large hill.
* Puke nui: This means "big hill."
* Te puke nui: This translates to "the big hill" and emphasizes its significance.
* Maunga teitei: This means "high mountain," implying a large and prominent hill.
* Te puke nui rahi: This combines "big hill" and "large" for a more emphatic description.
The most accurate translation depends on the specific context and the exact characteristics of the hill you're referring to.