Old Natura Brevtum
Defined in 1 dictionary — Black's (1910)
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
The title of a treatise written in the reign of Edward III. containing the writs which were then most in use, annexing to each a short comment concerning their nature and the application of them, with their various properties and effects. 3 Reeve, Eng. Law, 152. It is so called by way of distinction from the Neto Natura Brevium of Fitzherbert, and is generally cited as "O. N. B.," or as "Vet. Na. B.," using the abbreviated form of the Latin title.