grace or charm (see Molina); judging from related words, this can involve enchanting women, saying humorous things, telling jokes, etc.
Alonso de Molina:
texochtiliztli. donayre tal. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 112v. col. 1. Thanks to Joe Campbell for providing the transcription.