a mortar (to be used with a pestle), a crushing or pounding intrument (see Molina)
Orthographic Variants:
tepuztexoayan
Alonso de Molina:
tepuztexoayan. almirez. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 104r. col. 2. Thanks to Joe Campbell for providing the transcription.