shield-flower, a sunflower; seems to have war associations
This was also apparently the name of a thirteenth-century young woman who was captured and tormented in 1299, suffering so much that she begged to be sacrificed. Her name shows some considerable variation in orthography: Chimalxochitl, Chimalaxochitl, and Chimalacaxochitl, across various sources.
"Durante la fiesta 1 técpatl, que se dedicaba a Huitzilopochtli, ofrecían los. antiguos mexicanos unas flores llamadas chimalxóchitl (flor de escudo) al ídolo referido."
"La flor de la guerra (chimalxochitl) brotó cuando se dió la guerra."