xilotl (Mdz44r)
This element has been carved from the compound sign for the place name, Cuauhxilotitlan.
Stephanie Wood
The hash marks or strips on the cob make it look as though it has a face, but these markings may be an iconographic sign for maize given that they also appear on tortillas. Another possibility is that they are another "hua" syllable (from ohuatl).
c. 1541, but by 1553 at the latest

xilo(tl), small, tender ear of green maize, before it solidifies, https://nahuatl.wired-humanities.org/content/xilotl
tender maize ear
la mazorca tierna, el jilote, el elote
Codex Mendoza, folio 44 recto, https://digital.bodleian.ox.ac.uk/objects/2fea788e-2aa2-4f08-b6d9-648c00..., image 98 of 188.
The Bodleian Libraries, University of Oxford, hold the original manuscript, the MS. Arch. Selden. A. 1. This image is published here under the UK Creative Commons, “Attribution-NonCommercial-ShareAlike 3.0 License” (CC-BY-NC-SA 3.0).