1. a tropical South American climbing plant with seeds that contain high levels of caffeine, or the stimulating drink or powder made from these seeds
Usage: often used as a natural energy supplement

Examples

• Guarana is a popular ingredient in energy drinks.
• The seeds of the guarana plant contain more caffeine than coffee beans.
• Many athletes drink guarana for a natural energy boost.
• Guarana powder can be mixed into smoothies for extra stamina.
• The indigenous peoples of the Amazon have used guarana for centuries.