chichimecayotl.

Headword: 
chichimecayotl.
Principal English Translation: 

something partaking of the nature of the Chichimecs (see Karttunen); also a song in the Cantares Mexicanos; and it meant
"being a Chichimec"

Justyna Olko, Turquoise Diadems and Staffs of Office: Elite Costume and Insignia of Power in Aztec and Early Colonial Mexico (Warsaw: Polish Society for Latin American Studies and Centre for Studies on the Classical Tradition, University of Warsaw, 2005), 108.

IPAspelling: 
tʃiːtʃiːmeːkɑyoːtɬ
Frances Karttunen: 

CHĪCHĪMĒCAYŌ-TL something partaking of the nature of the Chichimecs / lo concerniente a los chichimecos (S) [(1)Cf.53r]. See CHĪCHĪMĒCA-TL.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 48, 49.

Attestations from sources in English: 

long male hair was conceived as an icon of chichimecayotl
Justyna Olko, Turquoise Diadems and Staffs of Office: Elite Costume and Insignia of Power in Aztec and Early Colonial Mexico (Warsaw: Polish Society for Latin American Studies and Centre for Studies on the Classical Tradition, University of Warsaw, 2005), 108.