one’s vision (see Karttunen); this is a necessarily possessed form
IPAspelling:
-tɬɑtʃiyɑyɑ
Frances Karttunen:
-TLACHIYAYA necessarily possessed form one’s vision / mi vista, potencia visiva (C for first.pers.sg.possessor) [(1)Cf.50r,(1)Rp.43]. See TLACHIY(A). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 255.