Niece
Niece (nēs) , noun
[Old English nece, French nièce, Late Latin neptia, for Latin neptis a granddaughter, niece, akin to nepos. See Nephew.]
1.
A relative, in general; especially, a descendant, whether male or female; a granddaughter or a grandson. [Obsolete] — B. Jonson. Wyclif. Shak
2.
A daughter of one's brother or sister, or of one's brother-in-law or sister-in-law. In modern English, this is the primary meaning.