Half blood

Webster's Dictionary of the English Language

·noun A person so related to another.

II. Half blood ·noun A person whose father and mother are of different races; a half-breed.

III. Half blood ·- The relation between persons born of the same father or of the same mother, but not of both; as, a brother or sister of the half blood. ·see Blood, ·noun, 2 and 4.