to prepare the leaf of a maguey (agave) plant in order to extract the fiber (see Molina)
IPAspelling:
simɑ
Alonso de Molina:
cima. nitla. (pret. onitlacin.) aderezar la hoja de maguei para sacar el cerro. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 22r. col. 2. Thanks to Joe Campbell for providing the transcription.