a gopher hole, literally, the home of the gopher; Molina calls it the cave of the gopher (see Molina)
Orthographic Variants:
tozanychan, tozan ychan
Alonso de Molina:
tozanychan. cueua de tozan. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 148r. col. 2. Thanks to Joe Campbell for providing the transcription.