ocno.

Headword: 
ocno.
Principal English Translation: 

also, and also

IPAspelling: 
oknoː
Alonso de Molina: 

ocno. y mas, y tambien, iten, conjunctiones.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 75v. col. 1. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

OCNŌ in addition, more, too / y más, y también (M) [(2)Cf.92r]. See OC, NŌ.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 176.

Attestations from sources in English: 

oc no ome = another two (one will see a similar structure with other numbers, too)
Robert Haskett and Stephanie Wood's notes from Nahuatl sessions with James Lockhart and subsequent research.