Amazon

From Middle English, from Latin, from Ancient Greek Ἀμαζών (Amazṓn); perhaps Ionian Greek pronunciation of Old Persian *hamazan- (“warrior”), as the Amazon women were known warriors. A popular folk etymology, of Ancient Greek provenance, claims that the word derives from ἀ- (a-, “not”) + μαζός (mazós, “breast”), referencing the belief that Amazons cut off their right breast so that it would not hinder their ability to fire a bow or throw a spear.

From Spanish Río Amazonas. It is common belief that the Spanish explorer Francisco de Orellana fought a battle against a tribe of Tapuya natives, in which the women fought alongside the men, and that he derived the name from the Amazons in Greek mythology.

Chosen by Jeff Bezos in 1994 as a word beginning with 'A' which had existing connotations (see meanings listed in etymologies 1 & 2) of being exotic, different, and (as the Amazon River) the largest of its kind in the world.