Familiar, affectionate term for one's niece. Used in casual family contexts.
See also: 姪
My niece came over to visit.
I bought a birthday present for my niece.
Standard kanji spelling with the diminutive suffix っ子.
Irregular okurigana usage; less common than 姪っ子.
Derived from 姪 (めい, 'niece') with the diminutive suffix っ子 (っこ), adding a familiar, affectionate tone.