Etymology: Amazon = Uni-Boob!
The tribe he'd encountered on his excursion through the rainforest had a particularly odd tradition; they would cut off on of their breasts (usually the right one) to better utilize their body's strength while pulling a longbow. This form of mastication would be carried out at a young age and the women would grow up to be quite proficient with a bow.
So next time you're shopping on Amazon remember, it means no boob!
Cheers to random realization that the English language holds many weird secrets.
[River of Doubt by Candice Millard]