ihuiteteyo.

Headword: 
ihuiteteyo.
Principal English Translation: 

down balls, a design for a war shield
Frances Berdan and Patricia Anawalt, The Codex Mendoza, 1992, vol. 1, Appendix G.

Attestations from sources in English: 

The hieroglyph for the personal name Chimalpopoca includes the ihuiteteyo design. See the Visual Lexicon of Aztec Hieroglyphs (ed. Stephanie Wood).

Sometimes the symbols on this design are taken for shells. An article by Ian Mursell in Mexicolore refutes this, saying they are down balls, which have associations with death. He also paraphrases John Pohl, saying that the war shield was very personal, it "represented the warrior’s soul, and would generally be burned at the funeral of a dead man." https://www.mexicolore.co.uk/aztecs/ask-us/did-war-shield-symbols-repres...