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| gua·ra·na [ gwə rnə ] (plural gua·ra·na or gua·ra·nas) |
noun |
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| Definition: |
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Brazilian medicinal plant: a Brazilian plant whose seeds are used to make an herbal preparation to treat fatigue. The active ingredient is almost identical to caffeine. Latin name Paullinia cupana.
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| [Mid-19th century. Via Portuguese< Tupi] |
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