Aval
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In French law. The guaranty of a bill of exchange; so called because usually placed at the foot or bottom (aval) of the bill.
Story, Bills, §§ 394, 454.
The act of subseribing one's signature at the bottom of a promissory note or of a bill of exchange; properly an act of suretyship, by the party signing, In favor of the party to whom the note or bill is given.
1 Low. Can. 221.