cacatzactli.

Headword: 
cacatzactli.
Principal English Translation: 

a black man or a black woman (see Molina)

IPAspelling: 
kɑkɑtsɑktɬi
Alonso de Molina: 

cacatzactli. hombre negro, o negra.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 10v. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

Zazan tleino, cacatzactli temetztica tlacuiloa. Teccizmamaque. = What is a little darky who writes with a piece of lead? A snail.
Thelma D. Sullivan, "Nahuatl Proverbs, Conundrums, and Metaphors, Collected by Sahagún," Estudios de Cultura Náhuatl 4 (1963), 132–133.