Ancipitis Usus
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
Lat. In international law. Of doubtful use; the use of whieh is doubtful; that may be used for a civil or peaceful, as well as military or warlike, purpose. Gro. de Jure B. lib.
3, c. 1, § 5, subd. 8; 1 Kent, Comm. 140.