a pottery funnel, for transferring liquids from one vessel to another
Alonso de Molina:
caxpiaztli. embudo de barro. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 13r. col. 1. Thanks to Joe Campbell for providing the transcription.