to make wine from grapes by stepping on them (see Molina)
Alonso de Molina:
xocomecaquequezaloyan. lagar do pisan vuas. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 160v. col. 1. Thanks to Joe Campbell for providing the transcription.