Principal English Translation: 

grandfather (only attested in possessed form; see Karttunen)

Orthographic Variants: 
Frances Karttunen: 

-HUĒITĀTAH only attested in possessed form grandfather / su abuelito (Z for possessed form) [(2)Zp.4,158]. Z also has the phrase TĀTAH HUĒ(I) with the same sense. This is peculiar to Z; the common Nahuatl word for ‘grandfather’ is CŌL-LI See HUĒ(I), TAH-TLI.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 86.