Merriam-Webster's Collegiate® Dictionary, 11th Edition
NEGRO
I. noun (plural negroes)
Etymology: Spanish or Portuguese, from negro black, from Latin nigr-, niger
Date: 1555
a member of a race of humankind native to Africa and classified according to physical features (as dark skin pigmentation), negro adjective , sometimes offensive negroid adjective or noun , often capitalized, sometimes offensive negroness noun , sometimes offensive
II. geographical name river 400 miles (640 kilometers ) S central Argentina flowing E into the Atlantic, river 1400 miles (2253 kilometers ) E Colombia & N Brazil flowing into the Amazon, river 434 miles (698 kilometers ) central Uruguay flowing SW into Uruguay River