Black's Law Dictionary (2nd edition)dictionaries

Ancipitis Usus

Lat. In internatlon-al law. of doubtful use; the use of whlch is doubtful; that may be used for a clvil or peaceful, as well as military or warlike, pur-pose. Gro. de* Jure B. lib. 3, c. 1, j 5. subd. 8; 1 Kent, Comm. 140

Source: Black's Law Dictionary 2nd Ed (1910)