xixitiniliztli.

Headword: 
xixitiniliztli.
Principal English Translation: 

a fall that breaks something (see Molina)

Alonso de Molina: 

xixitiniliztli. cayda assi.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 160r. col. 1. Thanks to Joe Campbell for providing the transcription.