assignee

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A party to which a transfer of property, rights, or interest is made.
• noun One appointed to act for another; a deputy or agent.

from The Century Dictionary.

• noun A person to whom a transfer of some right or interest is made, either for his own enjoyment or in trust.
• noun An assigned servant; a convict formerly assigned to an Australian settler as an unpaid servant. See assigned and assignment, 7.

from the GNU version of the Collaborative International Dictionary of English.

• noun A person to whom an assignment is made; a person appointed or deputed by another to do some act, perform some business, or enjoy some right, privilege, or property. See assignment (c). An assignee may be by special appointment or deed, or be created by jaw; as an executor.
• noun In England, the persons appointed, under a commission of bankruptcy, to manage the estate of a bankrupt for the benefit of his creditors.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun one to whom a thing is assigned
• noun law one to whom rights or property is being transferred
• noun one who is appointed to act or speak in place of another; an agent

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun (law) the party to whom something is assigned (e.g., someone to whom a right or property is legally transferred)