popotia.

Headword: 
popotia.
IPAspelling: 
pohpohtiɑː
Alonso de Molina: 

popotia. nitla. (pret. onitlapopoti.) parear, hermanar, o conchauarvna cosa con otra.
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: 

POHPOHTIĀ vt to pair off, unite, join one thing with another / parear, hermanar, o conchabar una cosa con otra (M) [(1)Cf.84r,(2)Rp.69,123]. In one attestation in R this takes a direct object plus an oblique reflexive object prefix. redup. POHTIĀ.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 201.