tzincualcax.

Headword: 
tzincualcax.
Principal English Translation: 

hip (see Karttunen)

Orthographic Variants: 
tzīncuālcax
IPAspelling: 
tsiːnkwɑːlkɑʃ
Frances Karttunen: 

TZĪNCUĀLCAX pl: -MEH ~ -TIN hip / cadera (X) [(4)Xp.97]. This seems to have CAXI-TL as a component element. See TZĪN-TLI, -TZĪNCOCOX.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 312.