atzelhuia.

Headword: 
atzelhuia.
Principal English Translation: 

to spray or splash oneself with water; to throw water on the floor prior to sweeping (see Molina)

IPAspelling: 
ɑːtselwiɑ
Alonso de Molina: 

atzelhuia. nin. (pret. oninatzelhui.) rociarse con agua.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 9r. col. 1. Thanks to Joe Campbell for providing the transcription.

atzelhuia. nite. (pret. oniteatzelhui.) rociar a otro con agua.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 9r. col. 1. Thanks to Joe Campbell for providing the transcription.

atzelhuia. nitla. (pret. onitlaatzelhui.) rociar o regar el suelo para barrer.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 9r. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

dona Jua oquicouh atzetzelhuaztli(?) x tetl cacahuatl = Doña Juana bought (a water sprinkler, hyssop?) for ten cacao beans
Testaments of Culhuacan (provisionally modified first edition), eds. Sarah Cline and Miguel León-Portilla, online version http://www.history.ucsb.edu/cline/testaments_of_culhuacan.pdf, 14.