Definify.com
Webster 1913 Edition
Half blood
Half′ bloodˊ
(häf′blŭdˊ)
. 1.
The relation between persons born of the same father or of the same mother, but not of both; , 2 and 4.
as, a brother or sister of the
. See half blood
Blood
, Noun.
2.
A person so related to another.
3.
A person whose father and mother are of different races; a half-breed.
☞ In the 2d and 3d senses usually with a hyphen.