great-niece

/G R EY1 T N IY0 S/
noun
  1. 1

    A granddaughter of one's sibling; a daughter of one's nephew or niece. (Brother's granddaughter: fraternal grandniece. Sister's granddaughter: sororal grandniece.)

Synonyms

Translate “great-niece” into another language

Source: https://en.wiktionary.org/wiki/grandniece, https://en.wiktionary.org/wiki/great-niece