Principal English Translation:
in many places (see Molina)
Alonso de Molina:
mieccan. en muchas partes.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 56r. col. 2. Thanks to Joe Campbell for providing the transcription.
Horacio Carochi / English:
mieccān = in many places
Horacio Carochi, S.J., Grammar of the Mexican language with an explanation of its adverbs (1645), translated and edited with commentary by James Lockhart, UCLA Latin American Studies Volume 89 (Stanford: Stanford University Press, UCLA Latin American Center Publications, 2001), 506.
Lockhart’s Nahuatl as Written:
locative noun. miec, -cān.
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 225.
Attestations from sources in Spanish:
mieccan = en muchos lugares
Miguel León-Portilla, "Los nombres de lugar en náhuatl," Estudios de Cultura Náhuatl 15 (1982), 39.