gōe-sng外甥

sororal nephew

sororal nephew (sister's son); grandson (daughter's son)

English Wiktionary, “外甥” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A4%96%E7%94%A5 · confidence: High (Wiktionary, PH/Quanzhou/Jinjiang)