stimulant: Meaning and Definition of

stim•u•lant

1. something that temporarily quickens some vital process or the functional activity of some organ or part: Adrenalin is a stimulant for the heart.
2. any food or beverage that stimulates, esp. coffee, tea, or, in its initial effect, alcoholic liquor.
3. a stimulus or incentive.

1. temporarily quickening some vital process or functional activity.
2. stimulating. Cf.