feces, excrement/excrescence, or dregs (see Molina and Karttunen)
IPAspelling:
ʃɑːyoːtɬ
Alonso de Molina:
xayotl. hezes. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 158r. col. 2. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
XĀYŌ-TL dregs; excrement / heces (M) [(1)Bf.11r]. Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 322.