Jus duplicatum
Defined in 4 dictionaries — Ballentine's (1916), Black's (1910), Black's (1891), Bouvier (1839)
Ballentine's Law Dictionary
James A. Ballentine · 1916
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
A Dictionary of Law
Henry Campbell Black · 1891
A double right; the right of possession united with the right of property; otherwise called "droit-droit." 2 Bl. Comm. 199. Jus est ars boni et aequi. Law is the science of what is good and just. Dig. 1, 1, 1; Bract. fol. 2b. Jus est norma recti; et quicquid est contra normam recti est injuria. Law is a rule of right; and whatever is contrary to the rule of right is an injury. 3 Bulst. 313. Jus et fraus nunquam cohabitant. Right and fraud never dwell together. 10 Coke, 45a. Applied to the title of a statute. Id.; Best, Ev. p. 250, § 208. Jus ex injuria non oritur. A right does (or can) not arise out of a wrong. 4 Bing. 639; Broom, Max. 738, note.
A Law Dictionary, Adapted to the Constitution and Laws of the United States
John Bouvier · 1839
property, title. When a man has the possession as well as the property of any thing, he 1s said to have a double right, jus duplicatum. Bract. 1. 4, tr. 4,c. 4; 3 Bl. Com. 189.