moyoni. bullir las hormigas gusanos o cosa semejante. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 58v. col. 1. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
MOYŌN(I) to swarm / brullir las hormigas, gusanos o cosa semejante (M) [(2)Zp.8,174]. This appears to be related to MŌYŌ-TL ‘mosquito, flying insect,’ but there is a vowel length discrepancy in the first syllable. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 154.