tlatlalochtia in cauallo.

(a loanword from Spanish)

tlatlalochtia in cauallo.
Principal English Translation: 

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.