What is "inheritable blood"

Inheritable \In*her"it*a*ble\, a.

1. Capable of being inherited; transmissible or descendible; as, an inheritable estate or title.
   --Blackstone.

2. Capable of being transmitted from parent to child; as, inheritable qualities or infirmities.

3. [Cf. OF. enheritable, inheritable.] Capable of taking by inheritance, or of receiving by descent; capable of succeeding to, as an heir.

   By attainder . . . the blood of the person attainted is so corrupted as to be rendered no longer inheritable.
   --Blackstone.

   The eldest daughter of the king is also alone inheritable to the crown on failure of issue male.
   --Blackstone.

   Inheritable blood, blood or relationship by which a person becomes qualified to be an heir, or to transmit possessions by inheritance.