Simple Definition of niece
: a daughter of your brother or sister
Full Definition of niece
1 : a daughter of one's brother, sister, brother-in-law, or sister-in-law
2 : an illegitimate daughter of an ecclesiastic
Examples of niece
If he's my uncle, then I'm his niece.
Origin of niece
Middle English nece granddaughter, niece, from Anglo-French nece, niece, from Late Latin neptia, from Latin neptis; akin to Latin nepot-, nepos grandson, nephew — more at nephew
First Known Use: 14th century
NIECE Defined for Kids
Definition of niece
: a daughter of a person's brother or sister
Seen and Heard
What made you want to look up niece? Please tell us where you read or heard it (including the quote, if possible).