Y

to cover something with a shadow or shade, or to make a shade or shadow (see Molina)

a long nose (someone with a metlapilli, in terms of a nose)
Michel Launey, An Introduction to Classical Nahuatl, translated and adapted by Christopher MacKay (Cambridge: Cambridge University Press, 2011), 233.

very thin nose plug (literally, nose arrow) (Olko); or, a nose rod (Sahagún)
Justyna Olko, Turquoise Diadems and Staffs of Office: Elite Costume and Insignia of Power in Aztec and Early Colonial Mexico (Warsaw: Polish Society for Latin American Studies and Centre for Studies on the Classical Tradition, University of Warsaw, 2005), 167–168.

to guide; to lead

to tackle or tie up people or animals (see Molina)

little bits of worm-like material that come out of the nose when the point of the nose is squeezed (see Molina)

estate of the eldest, entailed estate (see Karttunen)