Ancient wall
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A wall built to be used, and in fact used, as a party-wail, for more than twenty years, by the express permission and continuous acquiescence of the owners of the land on which it stands.
Eno v. Del Vecchio, 4 Duer (N. Y.) 53, 63.