mamaztli.

Headword: 
mamaztli.
Principal English Translation: 

a soft feather used in weaving and other projects

IPAspelling: 
mɑmɑstɬi
Alonso de Molina: 

mamaztli. cañon con pluma.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 52r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

See an image that represents mamaztli in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).

themes: 
Feathers
Sensory Perception (sound, smell, etc.)
Textiles, Clothing