inside the earth or soil, in the center, in the center of the earth (see Molina)
Alonso de Molina:
tlallitic. dentro dela tierra, o el centro, o enel centro della. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 124r. col. 1. Thanks to Joe Campbell for providing the transcription.