calzón.

(a loanword from Spanish)

Headword: 
calzón.
Principal English Translation: 

shorts, trousers, pants (of various lengths)
(a loanword from Spanish)

Orthographic Variants: 
calço, calson, calsonis, garçonis
Attestations from sources in English: 

yua nehuatl poe [sic] de la cruz + organista...oniquipalehui mitotian yca oticcouhque garçonis [calzones] matlaCtli pos yua ome pos yua yca omoxtlahuia yc omitzomo ce pos yhua nahui tomi = I, Pedro de la Cruz, organist...I helped with the dancing by having us buy breeches for twelve pesos and paying one pesos and four reales to have them sewn up. (1652, Valley of Toluca)
Caterina Pizzigoni and Camilla Townsend, Indigenous Life after the Conquest: The De la Cruz Family Papers of Colonial Mexico (University Park, Penn.: Pennsylvania State University Press, 2021), 47, 78.

quiquixtilic ycalson mochi ycamissa (Jalostotitlan, Jalisco, 1611)
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 27.

hocan notzotzoma Çentetl tzomitl noCalçones yhuan Çe notzomitilma yhuan oc çen Çanon tzomitl notilma monamacaz = I have clothing, a pair of trousers of wool, a woolen cloak, and another cloak likewise of wool, that are to be sold (1644, Mexico City)
Jonathan Truitt, Sustaining the Divine in Mexico Tenochtitlan: Nahuas and Catholicism, 1523–1700 (Oceanside, CA: The Academy of American Franciscan History; Norman, OK: University of Oklahoma Press, 2018), 247, 252.

ce capoti yuan ropilla yhuan ce calsonis paño [S. Francisco Analcotitlan (Jalisco?), 1652]
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 8.

Attestations from sources in Spanish: 

ome calzones tlatzontli yca puntas = dos pares de calzones blancos labrados con sus puntas (Cuautitlan, Tepozotlan, 1639)
Vidas y bienes olvidados: Testamentos en náhuatl y castellano del siglo XVII, vol. 3, Teresa Rojas Rabiela, et al, eds. (México: CIESAS, 2002), 212–213.

Auh in nocalço opa yas Sa Joan Teotijuaca yhua ynosaco yhua ynospaua yhua nahui aneca tlaoli yhua nahui anecas pitzahuaquetl yhua nahui anec[as] ahuax yhua nahui anecas alhuexo ome nohuilo yhua ume pitzome yhua cepohuali yhua matlatl pesos jomanilis noquartiatzin = Asisimiso mando que mis calzones se lleven a San Juan Teotihuacan, y mi saco y mi espada y cuatro fanegas de maíz y cuatro fanegas de frijol, y cuatro fanegas de habas y cuatro fanegas de alverjón y dos novillos, dos lechones, y treinta pesos, lo cual se dará al Padre guardián (San Francisco Temascalapan, Edo de México, 1598)
Vidas y bienes olvidados: Testamentos indígenas novohispanos, vol. 2, Testamentos en náhuatl y castellano del siglo XVI, eds., Teresa Rojas Rabiela, Elsa Leticia Rea López, Constantino Medina Lima (Mexico: Consejo Nacional de Ciencias Tecnología, 1999), 312–313.