Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "jus":
   act, bill, bylaw, canon, decree, dictate, dictation, edict,
   enactment, form, formality, formula, formulary, institution, law,
   legislation, lex, measure, ordinance, ordonnance, prescript,
   prescription, regulation, rubric, rule, ruling, standing order,
   statute



Bouvier's Law Dictionary, Revised 6th Ed (1856):

JUS. Law or right. This term is applied in many modern phrases. It is also
used to signify equity. Story, Eq. Jur. Sec. 1; Bract, lib. 1, c. 4, p. 3;
Tayl. Civ. Law, 147; Dig. 1, 1, 1.
     2. The English law, like the Roman, has its jus antiquum and jus novum
and jus novissimum. The jus novum may be supposed to have taken its origin
about the end of the reign of Henry VII. A. D. 1509. It assumed a regular
form towards the end of the reign of Charles II. A. D. 1685, and from that
period the jus novissimum may be dated. Lord Coke, who was born 40 years
after the death of Henry VII. is most advantageously considered as the
connecting link of the jus antiquum and jus novissimum of English law.
Butler's Remin.



Bouvier's Law Dictionary, Revised 6th Ed (1856):

JUST. This epithet is applied to that which agrees with a given law which is
the test of right and wrong. 1 Toull. prel. n. 5 Aust. Jur. 276, n. It is
that which accords with the perfect rights of others. Wolff, Inst. Sec. 83;
Swinb. part 1, s. 2, n. 5, and part 1, Sec. 4, n. 3. By just is also
understood full and perfect, as a just weight Swinb. part 1, s. 3, U. 5.