noun
elder brother's wife; sister-in-law
Refers specifically to the wife of one's older brother. Not used for the wife of a younger brother or for a spouse's sister.
兄嫁はとても料理が上手だ。
My elder brother's wife is very good at cooking.
正月に兄嫁と一緒に実家へ帰省した
I went back to my parents' home with my sister-in-law (elder brother's wife) during the New Year holidays.
Compound of 兄 (ani, 'elder brother') and 嫁 (yome, 'bride, wife'). The reading あによめ is a straightforward combination of the kun'yomi readings of the two kanji.