zan oncan.

Headword: 
zan oncan.
Principal English Translation: 

right there, or in the same place

Orthographic Variants: 
çan oncan
Alonso de Molina: 

zan oncan. alli mesmo, o enel mesmolugar.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 14v. col. 2. Thanks to Joe Campbell for providing the transcription.