Baculus
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A rod, staff or wand, used in old English practice in making livery of seisin where no building stood on the land, (Bract. 40;) a stick or wand, by the erection of which on the land involved in a real action the defendant was summoned to put in his appearance; this was called "baculus nuntiatorius."
3 Bl. Comm. 279.