1. The grandson of one's stepsibling.
2. The stepgrandson of one's sibling.
My step-great-nephew is a good person.
by Elivaldeq November 24, 2019
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on may 31st you will do anything to make your nephew feel appreciated. show him love.
omg guys, today is national nephew day. let me go give him a hug and tell him how much i love him.
by lani knows best May 31, 2022
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