In pios usus
Defined in 3 dictionaries — Ballentine's (1916), Bouvier (1914), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
For religious use.
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
For pious uses; for religious purposes. 2 Bla. Com. 605.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
For pious uses; for religious purposes. 2 Bl. Comm. 505.