Black's Law Dictionary (2nd edition)dictionaries

Nauticum Fcenus

Lat. In the civil law. Nautical or maritime interest; an ex-traordinary rate of Interest agreed to be paid for the loan of money on the hazard of a voy-age; corresponding to interest on contracts of bottomry or respondentia in English and American maritime law. See Mackeld. Rom. Law, § 433 ; 2 Bl. Comm. 458

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