for one’s hair to be turning gray (see Karttunen)
CUĀIZTAY(A) for one’s hair to be turning gray / encanecer o tornarse cana de la cabeza (M) [(1)Cf.93r]. See CUĀ(I)-TL, IZTAY(A). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 58.