Regia via
Defined in 4 dictionaries — Ballentine's (1916), Black's (1910), Kinney (1893), Stimson (1881)
Ballentine's Law Dictionary
James A. Ballentine · 1916
A royal road.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Lat.
In old English law. The royal way; the king's highway. Co. Litt. 56a.
A Law Dictionary and Glossary
George C. Kinney · 1893
I.
In old English law. The royal
Glossary of Technical Terms, Phrases, and Maxims of the Common Law
Frederic Jesup Stimson · 1881
I. The royal [high] way.