M

someone who is very cruel, who tormented and punished many without mercy, or someone who executed the penalty of a convicted person (see Molina)

to threaten someone with death, or with great punishment (see Molina)

to forgive the death one deserved (forgive the death penalty) (see Molina)

myrrh
(a loanword from Spanish)

(central Mexico, late sixteenth century; originally from Sahagún in 1574, a document that Chimalpahin copied)
Codex Chimalpahin: Society and Politics in Mexico Tenochtitlan, Tlatelolco, Culhuacan, and Other Nahuatl Altepetl in Central Mexico; The Nahuatl and Spanish Annals and Accounts Collected and Recorded by don Domingo de San Antón Muñón Chimalpahin Quauhtlehuanitzin, eds. and transl. Arthur J. O. Anderson and Susan Schroeder (Norman: University of Oklahoma Press, 1997), vol. 2, 146–147.

mass, a ceremony in a Catholic church (a loanword from Spanish)

mercy or compassion
(a loanword from Spanish)

a child who helps out with masses and other jobs in the church (see monacillo -> monaguillo, RAE) (partly a loanword from Spanish, misa, a Catholic mass)

penetrated by an arrow (e.g. a tree on a boundary that has been marked as such); from mitl + icac

(sixteenth century, Quauhtinchan)
Historia Tolteca-Chichimeca, eds. Paul Kirchhoff, Lina Odena Güemes, y Luis Reyes García (México: CISINAH, INAH-SEP, 1976), 157.

the metal tip of an arrow or dart (see Molina)