potia.

Headword: 
potia.
Principal English Translation: 

to make equal; to pair up, to join two things together

IPAspelling: 
pohtiɑː
Alonso de Molina: 

potia. nitla. (pret. onitlapoti.) lo mesmo es que popotia.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 83v. col. 1. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

POHTIĀ vt to pair off, join one thing with another / parear, hermanar, o conchabar una cosa con otra (M) [(3)Cf.83v]. This appears in P as a reflexive verb. See -POH.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 201.

Attestations from sources in English: 

nimitznopoti = I make you my equal
Robert Haskett and Stephanie Wood's notes from Nahuatl sessions with James Lockhart and subsequent research.