air or breath (when reduplicated, ehecatl, it is wind); Ecatl is a name, perhaps it is meant to be Ehecatl at times; e.g. Ecatl was the name of a governor of Tlatelolco in the colonial period (and possibly meant to be Ehecatl) (see the Florentine Codex); also, Ecatl was the name of a rural person (male) in the sixteenth century in what are now the states of Morelos and Puebla (probably among others)
See an image that represents ecatl in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).
Don Martin hêca ic vme tlatocat in tlatilulco: exiujtl ie impan in españoles. = Don Martin Ecatl [was] the second who governed Tlatilulco. He ruled three years in the time of the Spaniards. (central Mexico, sixteenth century)
ytequitqui ytoca yecatl yn içivauh ytoca tecapa = The tribute payer is named Ecatl. His wife is named Tecapan. (Cuernavaca region, ca. 1540s)