Amazon

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Greek Mythology A member of a nation of women warriors reputed to have lived in Scythia.
2. n. A tall, aggressive, strong-willed woman.
3. n. A small green parrot of the genus Amazona, having a short tail and red-and-blue wings, native to Central and South America.

Century Dictionary and Cyclopedia

1. n. In Gr. Legend, one of a race of women who dwelt on the coast of the Black Sea and in the Caucasus mountains. They formed a state from which men were excluded, devoted themselves to war and hunting, and were often in conflict with the Greeks in the heroic age. The Amazons and their contests were a favorite theme in Grecian art and story.
2. n. A warlike or masculine woman; hence, a quarrelsome woman; a virago.
3. n. A general book-name of any South American parrot, of the genus Chrysotis, of which there are numerous species.
4. n. A name of sundry humming-birds: as, the royal amazon, Bellatrix regina.

Wiktionary

1. n. Greek mythology A member of a mythical race of female warriors inhabiting the Black Sea area.
2. n. A female warrior.
3. n. A tall, strong, or athletic woman.
4. n. A river of South America that flows through Brazil for about 4000 miles to the South Atlantic.
5. n. A region including much of this river; specifically, the region of the Amazon Rainforest, or of the Amazon River Basin.
6. n. Used attributively in compounds.
7. n. Any of the large parrots from the genus Amazona.

GNU Webster's 1913

1. n. One of a fabulous race of female warriors in Scythia; hence, a female warrior.
2. n. A tall, strong, masculine woman; a virago.
3. n. (Zoöl.) A name numerous species of South American parrots of the genus Chrysotis.

WordNet 3.0

1. n. a major South American river; arises in the Andes and flows eastward into the South Atlantic; the world's 2nd longest river (4000 miles)
2. n. a large strong and aggressive woman
3. n. (Greek mythology) one of a nation of women warriors of Scythia (who burned off the right breast in order to use a bow and arrow more effectively)
4. n. mainly green tropical American parrots