well balanced, as in a trustworthy scale (see Molina); contains the loanword "peso," here referring to weight
Orthographic Variants:
peso ynepantla ycac
Alonso de Molina:
peso ynepantla ycac. fiel de balanza. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 81r. col. 1. Thanks to Joe Campbell for providing the transcription.