noun
blood relation; blood relative
Refers to a person related by blood, as opposed to a relative by marriage or adoption. Often contrasted with 血縁 (けつえん), which is more common.
See also: 血縁
彼は私の肉縁の兄弟だ。
He is my blood brother.
肉縁の家族を大切にしたい。
I want to cherish my blood family.