a portion of linen, wool, or the like that has been spun and that fits on the spindle; or a spool of thread
IPAspelling:
semmɑlɑkɑtentɬi
Alonso de Molina:
cemmalacatentli. vna husada, o vna mazorca de hilado. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 16r. col. 2. Thanks to Joe Campbell for providing the transcription.