Recessus maris
Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)
Ballentine's Law Dictionary
James A. Ballentine · 1916
Receding of the sea. See Reliction.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Lat.
In old English law. A going back; reliction or retreat of the sea.