something insufficient or lacking; someone to whom no one pays attention (see Molina)
Orthographic Variants:
acan ompoui
Alonso de Molina:
acan ompoui. cosa insufficiente y falta, o persona de quien no se haze caso. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 1v. col. 2. Thanks to Joe Campbell for providing the transcription.