something shared or an agreement between two people (see Molina)
Alonso de Molina:
iuh nenonotzaliztli. partido o concierto entre dos. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 43v. col. 1. Thanks to Joe Campbell for providing the transcription.