yeepohualli.

Headword: 
yeepohualli.
Principal English Translation: 

each sixty

Orthographic Variants: 
yeepoalli
Alonso de Molina: 

yeepoalli. cada sesenta.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 35r. col. 1. Thanks to Joe Campbell for providing the transcription.