ixcuamama.

Headword: 
ixcuamama.
Principal English Translation: 

to carry something with a tumpline on one's forehead
Gran Diccionario Náhuatl, citing A. Wimmer (2004), who cites the Florentine Codex, Book 12. https://gdn.iib.unam.mx/diccionario/ixcuamama/51740

Attestations from sources in English: 

The Florentine Codex has many visual examples of men carrying petate-wrapped bundles on their backs using the cacaxtli (wooden frame) and the mecapalli (tumpline). See, for example: https://florentinecodex.getty.edu/book/9/folio/16v/images/0
Available at Digital Florentine Codex/Códice Florentino Digital, edited by Kim N. Richter and Alicia Maria Houtrouw, "Book 9: The Merchants", fol. 16v, Getty Research Institute, 2023. https://florentinecodex.getty.edu/en/book/9/folio/16v/images/0 Accessed 28 August 2025.