noun.
The state of being addicted; devotion; inclination.
noun.
A habit or practice that damages, jeopardizes or shortens one's life but when ceased causes trauma.
noun.
A pathological relationship to mood altering experience that has life damaging consequences.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)
noun.
(Roman law) a formal award by a magistrate of a thing or person to another person (as the award of a debtor to his creditor); a surrender to a master
noun.
an abnormally strong craving
Word Usage
"The term addiction usually refers to both psychological and physical dependence on a drug, including alcohol."