1. 同母异父兄弟;同父异母兄弟：Grandson: 孙子,外孙; | Half-brother:同母异父兄弟;同父异母兄弟; | Half-sister: 同母异父姐妹;同父异母姐妹;

2. 同母异父(或同父异母)兄弟：gypsy moth 舞毒蛾 | half brother 同母异父(或同父异母)兄弟 | halfway path 中庸之道

3. 同父异母兄弟,同母异父兄弟：full sister, sister-german 亲姐妹 | half brother 同父异母兄弟,同母异父兄弟 | half sister 同父异母姐妹,同母异父姐妹

4. 同父(母)异母(父)兄弟：groom新郎 | half brother同父(母)异母(父)兄弟 | half sister同父(母)异母(父)姐妹

1. 同母异父（或同父异母）兄弟
Someone's half-brother is a boy or man who has either the same mother or the same father as they have.

noun

1. a brother who has only one parent in common with you

Synonym: stepbrotherhalf brother