What is Bill Of Gross Adventure?

Legal Definition
A phrase used in French maritime law; it comprehends every instrument of writing which contains a contract of bottomry, respondentia, and every species of maritime loan. We have no word of similar import. Hall on Mar. Loans, 182, n. See Bottomry; Gross adventure; Respondentia.
-- Bouviers Law Dictionary
Legal Definition
In French maritime law. Any written instrument which contains a contract of bottomry, respondentia, or any other kind of maritime loan. There is no corresponding English term. Hall, Marit. Loans, 182, n.
-- Black's Law Dictionary
Legal Definition
(French) A written contract of bottomry, respondentia, or other maritime loan.
-- Ballentine's Law Dictionary