Horn Tenure
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In old English law
Tenure by cornage; that is, by the service of winding a horn when the Scots or other enemies entered the land, in order to warn the king's subjects. This was a species of grand serjeanty.
Litt § 156; 2 Bl. Comm. 74.