Intruder
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
One who enters upon land without either right of possession or color of title.
Miller v. McCullough, 104 Pa. 630; Russel v. Chambers, 48 Ga. 479.
In a more restricted sense, a stranger who, on the death of the ancestor, enters on the land, unlawfully, before the heir can enter.