A female friend.
A female partner in an unmarried romantic relationship.
A fellow gay man, especially a friend as opposed to a sexual partner.
A term of address for a female friend or among gay men.
A daughter of one’s cousin or cousin-in-law
A daughter of one’s sibling, brother-in-law, or sister-in-law; either the daughter of one's brother ("fraternal niece"), or of one's sister ("sororal niece").