on the surface, or on the front (see Molina and Karttunen)
IPAspelling:
tɬɑiːʃko
Alonso de Molina:
tlaixco. enla sobrehaz, o en la delantera. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 122v. col. 2. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
TLAĪXCO on the surface, in the front / en la sobrehaz, o en la delantera (M) [(1)Cf.21r]. M and C both have this in construction with the verb CĀ with the sense of ‘on top, first out.’ See –ĪXCO. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 272.