Webster’s Revised Unabridged Dictionary · 1913
Stimulant
Stim′u·lant (stĭm′ū·lant), a. [L. stimulans, p. pr.; cf. F. stimulant. See Stimulate.] 1. Serving to stimulate.
2. (Physiol.) Produced increased vital action in the organism, or in any of its parts.
Stim′u·lant, n. [Cf. F. stimulant.] 1. That which stimulates, provokes, or excites.
His feelings had been exasperated by the constant application of stimulants. Macaulay.
2. (Physiol. & Med.) An agent which produces a temporary increase of vital activity in the organism, or in any of its parts; — sometimes used without qualification to signify an alcoholic beverage used as a stimulant.