half blood Meaning, Definition & Usage

  1. noun one of siblings who have only one parent in common

WordNet

Half" blood`
Definitions
  1. 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, n., 2 and 4.
  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.

Webster 1913