姪女婿

侄女婿
zhínǚxu
  1. brother's daughter's husband
  2. niece's husband

CEDICT

nephew-in-law (husband of brother's daughter)

Wiktionary

Entry Composition

1 姪女 zhínǚ brother's daughter; niece
=2 婿 xù variant of 婿 xù
=2 婿 xù
  1. son-in-law
  2. husband