Regula
Defined in 4 dictionaries — Ballentine's (1916), Bouvier (1914), Black's (1910), Anderson (1889)
Ballentine's Law Dictionary
James A. Ballentine · 1916
A rule.
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
See Maxims.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Lat In practice. A ruin. Regula generalis, a general rule; a standing rule or order of a court Frequently abbreviated, "Reg. Gen."
— Regula Catoniana. In Roman law. The rule of Cato. A rule respecting the validity of dispositions by will. See Dig. 34, 7.
A Dictionary of Law
William C. Anderson · 1889