nephew-in-law

Short definition from Wiktionary

Noun

1. 1
   Someone's niece's husband
2. 2
   Someone's sibling's son-in-law: Someone's brother's son-in-law. (fraternal nephew-in-law)
3. 3
   Someone's sibling's son-in-law: Someone's sister's son-in-law. (sororal nephew-in-law)
4. 4
   Someone's spouse's sibling's son-in-law: Someone's wife's brother's son-in-law.
5. 5
   Someone's spouse's sibling's son-in-law: Someone's wife's sister's son-in-law.
6. 6
   Someone's spouse's sibling's son-in-law: Someone's husband's brother's son-in-law.
7. 7
   Someone's spouse's sibling's son-in-law: Someone's husband's sister's son-in-law.
8. 8
   Someone's spouse's nephew: Someone's husband's nephew. (Usually called a nephew.)
9. 9
   Someone's spouse's nephew: Someone's wife's nephew. (Usually called a nephew.)