miércoles.

(a loanword from Spanish)

Headword: 
miércoles.
Principal English Translation: 

Wednesday
(a loanword from Spanish)

Attestations from sources in English: 

...pan tonali miercoles (Puebla, circa 1680–1700)
Frances Karttunen and James Lockhart, Nahuatl in the Middle Years: Language Contact Phenomena in Texts of the Colonial Period, Linguistics 85 (Los Angeles, University of California Publications, 1976), Doc. 9.

Axcan Miercules a 9 de Dbre Xiuhtlapuali 1795 aos (Metepec, 1795)
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 6.

miercolestica yuan sabadotica mopouaz, auh yn domingotica mocha mopouaz (mid sixteenth century, Central Mexico)
Louise M. Burkhart, Before Guadalupe: The Virgin Mary in Early Colonial Nahuatl Literature, Institute for Mesoamerican Studies Monograph 13 (Albany: University at Albany, 2001), 127.

Attestations from sources in Spanish: 

axcan miercoles = hoy miercoles (Ciudad de México, 1563)
Luis Reyes García, Eustaquio Celestino Solís, Armando Valencia Ríos, et al, Documentos nauas de la Ciudad de México del siglo XVI (México: Centro de Investigación y Estudios Superiores en Antropología Social y Archivo General de la Nación, 1996), 102.