Fossa
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In the civil law. A ditch ; a receptacle of water, made by hand.
Dig. 43, 14, 1, 5.
In old EngUsh law. A ditch. A pit full of water, in which women committing felony were drowned. A grave or sepulcher.
Spelman.