niece /ni:s/ n. ［c］ 侄女，甥女(cf. nephew) ：Niece is a daughter of one's brother or sister, or of one's brother-in-law or sister-in-law. Niece相当于汉语里的侄女，外甥女，还包括内侄女，小姨子或大姨子的女儿。My mother's nieces are my cousins.我母亲的侄女是我的表妹。