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Top definition
great-niece-in-law
1. The
granddaughter-in-law
of one's sibling.
2. The
granddaughter
of one's
spouse's
sibling.
My great-niece-in-law is
a good person
.
by
Elivaldeq
November 24, 2019
Get a
great-niece-in-law
mug for your coworker Julia.