midday (see Molina); at noon; literally, sun in the middle (of the sky)
Alonso de Molina:
nepantla tonatiuh. medio dia. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 69r. col. 1. Thanks to Joe Campbell for providing the transcription.