Principal English Translation:
pronominal prefix of a reflexive verb, third-person singular and plural
Lockhart’s Nahuatl as Written:
reflexive prefix for all the persons except the first and for both numbers.
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), 255.