Malus Usus Est Abolendus
Defined in 2 dictionaries — Cyclopedic (1922), Ballentine's (1916)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
An evil custom is to be abolished. Co. Litt. 141; Broom, Leg. Max. (3d London Ed.) 827; Litt. § 212; 5 Q. B. 701; 12 Q. B. 845; 2 Myline & K. 449.
Ballentine's Law Dictionary
James A. Ballentine · 1916
An evil custom should be abolished. See 71 Pa. 69.