metzcopini.

Headword: 
metzcopini.
Principal English Translation: 

for one’s hip to become dislocated (see Karttunen)

Orthographic Variants: 
metzcopīni
IPAspelling: 
metskopiːni
Frances Karttunen: 

METZCOPĪN(I) for one’s hip to become dislocated / se zafa (el pie) (Z) [(2)Zp. 131, 167]. See METZ-TLI, COPĪN(I).
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 143.