Someone's nephew is the son of their sister or brother. I am planning a 25th birthday party for my nephew. the son of your brother or sister, or the son of your husband's or wife's brother or sister niece, uncle uncle, aunt aunt (neveu, from nepos )
siostrzeniec [SHAWSH-treh-nets] You can only have a nephew when a sibling (like a sister, siostra) has a boy Extend siostra to siostrzeniec Date of entry: 9 April 2000