1. a river in N South America, flowing E from the Peruvian Andes through N Brazil to the Atlantic Ocean: the largest river in the world in volume of water carried. 3900 miles (6280 km) long.
2. Classical Mythology. One of a race of female warriors said to dwell near the Black Sea.
3. one of a fabled tribe of female warriors in South America.
4. (often lowercase) A tall, powerful, aggressive woman.
EX. It's Xena the Amazonian Warrior Princess dressed up in a samurai get-up. What more do you want me to say?