a discount of something that is owed, giving or paying something for another (see Molina)
Orthographic Variants:
ipam poliui, ipan polihui, ipan poliui
Alonso de Molina:
ipam poliui. descuento de alguna cosa que se deue, dando o pagando vna cosa por otra Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 41v. col. 1. Thanks to Joe Campbell for providing the transcription.