the act of measuring something one-eyed (imperfectly) (see Molina)
Orthographic Variants:
tlachicotamachiualiztli
Alonso de Molina:
tlachicotamachiualiztli. el acto de medir tuertamente alguna cosa. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 117r. col. 2. Thanks to Joe Campbell for providing the transcription.