noun
1.
a. : the relation between persons having one parent but not both in common — compare blood 2, consanguineous , demisang , uterine , whole blood
b. : a person so related to another
2. : half-breed 1
3. : a grade of wool next below fine in a descending scale of fineness — compare blood 7, braid 2, quarter blood
4.
a. : an animal tracing from a pure breed or strain through one parent only : grade 5
b. : an individual heterozygous for a specified character