also: おとよめ
noun
younger brother's wife; sister-in-law (younger brother's spouse)
Refers specifically to the wife of one's younger brother. Not used for an older brother's wife (兄嫁).
弟嫁は料理がとても上手だ。
My younger brother's wife is very good at cooking.
来月、弟嫁が初めての子どもを
Next month, my younger brother's wife is due to have her first child.