"our"
The name Tonantzin is commonly a female name from the "Nahuatl" origin that means "our".
Tonantzin is a Nahuatl name formed from the first person plural possessive to-, "our," plus nantzin, an honorific form of nantli, "mother," giving the sense "our revered mother." The title is attested in colonial-era Nahuatl sources, including the Florentine Codex compiled under Bernardino de SahagĂșn, where it is used of a maternal deity, and it also appears in the 17th-century Nahuatl text known as the Nican Mopohua. In modern use it is chiefly a Mexican Spanish rendering of that Nahuatl word.
The pronunciation of Tonantzin is toh-NAHN-tsin.