ecacoatl.

Headword: 
ecacoatl.
Principal English Translation: 

a hurricane whirlwind (see Molina); also, the name of a person

Orthographic Variants: 
Yecacovatl
IPAspelling: 
ehkɑkoːɑːtɬ
Alonso de Molina: 

ecacoatl. manga tal.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 28r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

A wind in the shape of a coiled serpent.

yn iyoquich ytoca yecacovatl = Her husband is named Ecacoatl. (Cuernavaca region, ca. 1540s)
The Book of Tributes: Early Sixteenth-Century Nahuatl Censuses from Morelos, ed. and transl. S. L. Cline, (Los Angeles: UCLA Latin American Center Publications, 1993), 164–165.

themes: 
Weather, Climate