姪 は英語でniece 英語の定義 姪 1. n. the daughter of one's sibling; a niece その他の翻訳と定義 niece 1. eng. 姪めい。 niece 1. n. A daughter of one’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"). My niece just celebrated her 15th birthday. ウィクショナリーから辞書引用辞書