Stimulant

stimulant , stimulus : The first of these words denotes that which stimulates the system, as coffee does the action of the heart. A stimulus is that which impels or urges on; as, “a stimulus to hard work is offered by the pecuniary reward it yields.”

 Stimulants

Stimulants are remedies which increase the action of the heart and arteries, or the energy of the part to which they are applied, such as food, wine, spirits, ether, sassafras, which is an internal stimulant, and savine, which is an external one.