Definition of Ejector
One who ejects, puts out, or dispossesses another.
Casual ejector. The nominal defendant in an action of ejectment; so called because, by a fiction of law peculiar to that action, he is supposed to come casually or by accident upon the premises and to eject the lawful possessor. 3 Bl.Comm. 203.
That's the definition of Ejector in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.