0 a brother who is the son of only one of your parents --
1 a brother who has one of the same parents as you do, but whose other parent is different from yours --
He was treated comparatively well by his father, who educated him together with his legitimate half-brother.
She has a twin brother, with whom she is said to get along well, and a younger half-brother and half-sister who are also twins.
His family included two brothers, a sister, a half-brother, and a half-sister.
He is assumed to have studied drawing and painting with his half-brother.
He had seven brothers and sisters and four half-sisters and one half-brother from his father's first marriage.
A dishonest shipbuilder plans to frame his half-brother for his own criminal activities.
As her half-brother, following the death of their father he is given control over her because of her young age.
He has a half-brother, three half-sisters and a younger full sister.