Gradus
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In the civil and old English law. A measure of space. A degree of relationship. A step or degree generally; e. g., gradus honorum, degrees of honor. Vicat. A pulpit; a year; a generation.
Du Cange
A port; any place where a vessel can be brought to land. Du Cange.