There isn't one for 'grandson' or 'granddaughter' specifically, but 'mokopuna' in maori means grandchild.
The Māori word for grandsons is mokopuna tama.
The spelling of "table" in Maori language is "tēpu."
The Maori name for Desmond is Hēmānia.
The Maori name for Manukau is Manukau.
The Maori name for Margaret is Mareta.
The spelling of "chair" in Māori language is "tūru."
Well grandson, granddaughter, grandchild, and grandchildren all mean "Mokopuna" no matter how many grandchildren or what genda they are.
The spelling of "table" in Maori language is "tēpu."
The Maori name for Margaret is Mareta.
The Maori name for Desmond is Hēmānia.
The spelling of "chair" in Māori language is "tūru."
The Māori name for tui is "pīwakawaka."
The Maori name for Manukau is Manukau.
The Maori name for John is Hone.
The Maori name for the planet Mercury is 'Takero'.
In Maori, "how are you" can be expressed as "Kei te pehea koe".
the name of the Maori tribal leader was Rangatira.
The Maori name for Banks Peninsula is Te Pataka o Rakaihautu.