1. Something that stimulates or encourages; an agent that produces a response or increases activity
Coffee is a common stimulant beverage.
O café é uma bebida estimulante comum.
2. Adjective: serving to stimulate, encourage, or invigorate
The speech was stimulating and inspiring.
O discurso foi estimulante e inspirador.
3. Pharmacology: a substance that increases physiological or nervous activity
Amphetamines are powerful stimulants.
As anfetaminas são estimulantes poderosos.