also: はらがわり
noun
Refers to a sibling who shares only one parent. The term 腹違い is the common modern form; 腹変わり is an older variant. Compare with 異母兄弟/異父兄弟 for more specific terms.
See also: 腹違い
彼は私の腹違いの兄です。
He is my half-brother.
腹違いの姉が二人います。
I have two half-sisters.
Compound of 腹 (hara, 'belly, womb') and 違い (chigai, 'difference'), literally 'different womb'. The older form 腹変わり uses 変わり (kawari, 'change').