-tlacaicniuh.

Headword: 
-tlacaicniuh.
Principal English Translation: 

one's neighbor (only attested in possessed form) (see Karttunen)

Orthographic Variants: 
-tlācaicnīuh
IPAspelling: 
-tɬɑːkɑikniːw
Frances Karttunen: 

-TLĀCAICNĪUH only attested in possessed form one’s neighbor / su vecino (T) [(1)Tp.135]. T has lost the word-final consonant. See TLĀCA-TL, (I)CNĪUH-TLI.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 251.