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Pratice, ejectment. A person, supposed to come upon-land casually, (although usually by previous agreement,) who turns out the lessee of the person claiming the possession against the actual tenant or occupier of the land. 3 Bl. Com. 201, 202.

Originally, in order to try the right by ejectment, Several things were necessary to be made out before the court first, a title to the land, in question, upon which the owner was to make a formal entry; and being so in possession he executed a lease to some third person or lessee, leaving him in possession then the prior tenant or some other person, called the casual ejector, either by accident or by agreement beforehand, came upon the land and turned him out, and for this ouster or turning out, the action was brought. But these formalities are now dispensed with, and the trial relates merely to the title, the defendant being bound to acknowledge the lease, entry, and ouster. 3 Bl. Com. 202;.Dane's Ab. Index, h. t.