tzonquizqui.

Headword: 
tzonquizqui.
Principal English Translation: 

something that is final, at the end

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), 240.

IPAspelling: 
tsonkiːski
Alonso de Molina: 

tzonquizqui. cosa acabada y concluyda.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 153v. col. 1. Thanks to Joe Campbell for providing the transcription.

Lockhart’s Nahuatl as Written: 

pret. agentive of tzonquīça, to end, be finished.
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), 240.