half-sister
英 [ˈhɑːf sɪstə(r)]
美 [ˈhæf sɪstər]
n. 同母异父(或同父异母)的姐妹
复数：half-sisters
牛津词典
noun
- 同母异父（或同父异母）的姐妹
a person's half-sister is a girl or woman who has either the same mother or the same father as them
柯林斯词典
- 同母异父（或同父异母）姐妹
Someone'shalf-sisteris a girl or woman who has either the same mother or the same father as they have.
英英释义
noun
- a sister who has only one parent in common with you