n. A daughter of someone’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").
the GNU version of the Collaborative International Dictionary of English
n. A relative, in general; especially, a descendant, whether male or female; a granddaughter or a grandson.
n. 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.
The Century Dictionary and Cyclopedia
n. A grandchild, or more remote lineal descendant, whether male or female; specifically, a granddaughter.
n. The daughter of one's brother or sister.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a daughter of your brother or sister
Word Usage
"As far as I know, I am the only Lois Reibach in the world, but my niece is also lreibach and she has taken that identity in a number of online services."