In the lineal kinship system used in the English-speaking world, a niece or nephew is a child of the subject's sibling or sibling-in-law. The converse relationship, the relationship from the niece or nephew's perspective, is that of an aunt or uncle. A niece is female and a nephew is male.

What is the full meaning of niece?

: a daughter of one's brother, sister, brother-in-law, or sister-in-law.

Does niece mean a girl?

If you are female, you are their niece. If you are male, you are their nephew. Both niece and nephew come from the Latin word nepotem.