Final answer:
Alcohol is classified as a depressant and depresses the central nervous system, leading to disinhibition and other effects.
Step-by-step explanation:
Alcohol is classified as a depressant, not a stimulant. When consumed, alcohol depresses the central nervous system (CNS), including the cerebral cortex, brainstem, and medulla. This depression leads to a variety of effects, including disinhibition, sedation, impaired motor control, and reduced behavioral control.