See an image that represents amantecatl in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).
Amantecatl, hacic, ixe, iollo. = The featherworker [is] accomplished, ingenious. (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 10 -- The People, No. 14, Part 11, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 25.
Literally, inhabitant of Amantlan, this came to mean featherworker, skilled craftsman in general. Like other ethnically derived trade designations, it dropped the ethnic connotation over time. Another example is toltecatl. (central Mexico, sixteenth century)
James Lockhart, The Nahuas after the Conquest: A Social and Cultural History of the Indians of Central Mexico, Sixteenth Through Eighteenth Centuries (Stanford: Stanford University Press, 1992), 192.