the boundaries or boundary markers of a city or town (see Molina)
IPAspelling:
ɑːltepeːtepɑːntɬi
Alonso de Molina:
altepetepantli. terminos, o mojones dela ciudad. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 4r. col. 2. Thanks to Joe Campbell for providing the transcription.