In property law, alienation is the capacity for a piece of property or a property right to be sold or otherwise transferred from one party to another. Although property is generally deemed to be alienable, it may be subject to restraints on alienation. In England under the feudal system, land was generally transferred by subinfeudation and alienation required licence from the overlord.
Noun 1. the voluntary transfer of something (title or possession) from one party to another (synonym) delivery, livery (hypernym) conveyance, conveyance of title, conveyancing, conveying (hyponym) surrender
Campbell R. Harvey's Hypertextual Finance Glossary