Final answer:
The Hopi women's lacy, flat, blue cornmeal bread is called an alkaan, which holds cultural significance in the Navajo tradition linked to the Kinaaldá puberty ceremony.
Step-by-step explanation:
The lacy, flat, blue cornmeal bread that Hopi women baked was called an alkaan. This bread is not only a delicious treat but also carries significant cultural importance. The corn cake, known as an alkaan, is seen as a symbol of life and fertility, originating from a tradition linked to the Navajo deity Changing Woman. After creating the first corn cake, Changing Woman offered a piece to the sun, showing her gratitude for sustenance and life. In Navajo culture, the alkaan is closely associated with the Kinaaldá ceremony, marking a young Navajo girl's transition into womanhood.