Junior-right
Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
Same as Borough English.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
A custom prevalent in some parts of England (also at some places on the continent) by which an estate descended to the youngest son in preference to his older brothers; the same as "Borough-English." As to junior "Barrister," "Counsel," "Creditor," "Execution," "Judgment," and "Writ," see those titles.
Defined under Junior in Black's Law Dictionary.