to punish someone cruelly or in an inhumane way (see Molina)
Orthographic Variants:
tlamachuia
Alonso de Molina:
tlamachuia anite. aonitetlamachui. castigar cruel e inhumanamente a alguno. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 125r. col. 2. Thanks to Joe Campbell for providing the transcription.