内 名词1.(内部; 里头; 里边) inner; inside; within 国内市场 domestic [home] market; 房子内外都很干净。 the house is clean inside and out. 我们必须在3日内回到大连。 we must return to dalian within three days.2.(妻子或妻子的亲属) one's wife or her relatives 内人 my (humble) wife; 内兄 wife's elder brother; brother-in-law3.(姓氏) a surname 内洁 nei jie