n.1. The act or process of withdrawing, as:
a. A retreat or retirement: the dinner guests' withdrawal to the den.
b. The removal of people from a place, as in the removal of troops from a military position.
c. Detachment, as from social or emotional involvement.
d. A removal of something that has been deposited, as in an account.
2. a. Discontinuance of the use of a drug or other substance, especially one that is addictive.
b. The physiological and mental reaction to such discontinuance, often characterized by distressing symptoms: is going through withdrawal from opioids.
3. Informal A condition likened to that which is experienced when discontinuing use of an addictive substance: has been going through withdrawal since his favorite show ended.
4. The act or an instance of retracting or revoking: feared the withdrawal of his parents' permission.
5. Coitus interruptus.