to mistreat a horse; or, to skirmish or fight lightly from horseback (see Molina)
(partially a loanword from Spanish; caballo, horse)
Alonso de Molina:
tlatlalochtia in cauallo. nic. (pret. onictlatlalochti in cauallo.) hazer mal al cauallo, o escaramuzar a cauallo. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 138r. col. 1. Thanks to Joe Campbell for providing the transcription.