Meaning of -EE in English

a suffix used, chiefly in law terms, in a passive signification, to indicate the direct or indirect object of an action, or the one to whom an act is done or on whom a right is conferred; as in assignee, donee, alienee, grantee, ·etc. it is correlative to -or, the agent or doer.

Webster English vocab.      Английский словарь Webster.