for a horse (or the like) to rise up on its hind legs (see Molina)
Orthographic Variants:
meuatiquetza
Alonso de Molina:
meuatiquetza. (pret. omeuatiquetz) empinarse el cauallo cosa assi. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 55v. col. 2. Thanks to Joe Campbell for providing the transcription.