The female cousin or cousin-in-law of one’s parent.
A woman of an older generation than oneself, especially a friend of one's parents, by means of fictive kin.
The sister or sister-in-law of one’s parent.
A son of one's cousin or cousin-in-law
A son of one's sibling, brother-in-law, or sister-in-law; either a son of one's brother (fraternal nephew) or a son of one's sister (sororal nephew).