to make an explosive sound (see Karttunen and Molina)
IPAspelling:
ʃittomoːniɑː
Alonso de Molina:
xittomonia. nino. (pret. oninoxittomoni.) hazer rueda el gallo dela tierra. &c.
xittomonia. nitla. (pret. onitlaxittomoni.) hazer sonar algo rebentando. Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 159v. col. 1. Thanks to Joe Campbell for providing the transcription.
Frances Karttunen:
XITTOMŌNIĀ vrefl,vt to make an explosive sound; to cause something to make an explosive sound / hacer rueda el gallo de la tierra, etc. (M), hacer sonar algo reventando (M) This is indirectly attested by XITTOMŌN(I). M attests the unusual medial TT. See XITTOMŌN(I). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 326.