Grandniece

noun

Definitions

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.)

    "Then come […] the Duchess’s grandnieces Zwile and her little sister Gloria."

  2. 2
    a daughter of your niece or nephew wordnet

Etymology

From grand- + niece.

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