xotlac.

Headword: 
xotlac.
Principal English Translation: 

burned earth or charcoal; or, flowers already sprouted and open (see Molina)

IPAspelling: 
ʃoːtɬɑk
Alonso de Molina: 

xotlac. abrasada tierra, o encendidos carbones. o flores yabrotadas y abiertas.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 161v. col. 1. Thanks to Joe Campbell for providing the transcription.

abrasada tierra. xotlac. tlallitlatlac.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1555, part 1, Spanish to Nahuatl, f. 2r.

Attestations from sources in English: 

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

themes: 
Fire, Tobacco, Incense
Flowers
Landscape Features
Plants, Trees, Flora
See also: 
-xotlaca.