xini.

Headword: 
xini.
Principal English Translation: 

to collapse, crumble, fall in, fall apart

James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 241.

IPAspelling: 
ʃini
Alonso de Molina: 

xini. (pret. oxin.) caerse, o desbaratarse la pared, o sierra.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 159r. col. 2. Thanks to Joe Campbell for providing the transcription.

Lockhart’s Nahuatl as Written: 

ni. Class 2: ōnixīn. related to xitīni?
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 241.