Yes, amazons is a Scrabble word!

Noun

1. A large strong and aggressive woman

2. (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)

3. A major South American river; arises in the Andes and flows eastward into the South Atlantic; the world's 2nd longest river (4000 miles)

4. Mainly green tropical American parrots