to compose oneself, to get dressed up and polished up (see Molina)
IPAspelling:
ihihmɑti
Alonso de Molina:
ihimati. nin. (pret. oninihima.) componerse, aderezarse y pulirse. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 36r. col. 2. Thanks to Joe Campbell for providing the transcription.