Consanguineus frater
Defined in 2 dictionaries — Black's (1910), Burrill (1850)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In civil and feudal law. A half-brother by the father's side, as distinguished from frater uterinus, a brother by the mother's side. Consanguineus est quasi eodem sanguine natns. Co. Litt 157. A person related by consanguinity is, as It were, sprung from the same blood.
Defined under Consanguineus in Black's Law Dictionary.
A New Law Dictionary and Glossary
Alexander M. Burrill · 1850
Lat.
In feudal law. A brother by the father's side, as distinguished from frater uterinus, a brother by the mother's side. 2 Bl, Com, 231.