for the maize field to become full of weeds, or lack of cultivation (see Molina, who says this word has the same meaning as "aceceyoa")
Alonso de Molina:
aciciyoa. (pret. oaciciyoac.) lo mesmo es que aceceyoa. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 2r. col. 2. Thanks to Joe Campbell for providing the transcription.