in the shade, or under the shade (see Molina)
ecauillotitlan. ala sombra, o debaxo dela sombra. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 28r. col. 1. Thanks to Joe Campbell for providing the transcription.