a hurricane whirlwind (see Molina); also, the name of a person and the name of a snake (see below)
ecacoatl (or ehcacoatl, with the glottal stop) = a snake that crawls along the ground with most of its body in the air, while its tail remains on the ground. It is very long, three or four "brazas" in length. It is colorful. See the painting of it in the DFC.
yn iyoquich ytoca yecacovatl = Her husband is named Ecacoatl. (Cuernavaca region, ca. 1540s)
Ecatl can mean air or breath. Ehecatl refers to wind, and it is the name of a divine force (or deity), as the links below to related terms will reveal. (SW)