yegua.

(a loanword from Spanish)

Headword: 
yegua.
Principal English Translation: 

mare
(a loanword from Spanish)

Orthographic Variants: 
yehua
Attestations from sources in English: 

matacti yuan ome yehuas [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.

sen yehua ysintiyon (Centlalpan, Chalco, 1736)
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. 10.

Attestations from sources in Spanish: 

mopia macuilpoali yhuan matlactli omey yeguas yca ome garanoñes = ciento y doce yeguas con sus dos garañones (Tepexi de la Seda, 1621)
Vidas y bienes olvidados: Testamentos en náhuatl y castellano del siglo XVII, vol. 3, Teresa Rojas Rabiela, et al, eds. (México: CIESAS, 2002), 110–111.