Literæ mortnæ
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
Dead letters ; fulfilling words of a statute. Lord Bacon observes that "there are in every statute certain words which are as veins, where the life and blood of the statute cometh, and where all doubts do arise, and the rest are' Uteres mortuas, fulfilling words."
Bac. St. Uses, (Works, iv. 189.)