Principal English Translation:
one's native language, Nahuatl (see Karttunen)
Frances Karttunen:
NĀHUATLAHTŌL-LI one's native language, Nahuatl / lengua mexicana (R) [(1)Rp.170]. See NĀHUA-TL, TLAHTŌL-LI.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 158.
Attestations from sources in English:
ca amo no huel yxcoyantzinco. yneyxcahuiltlamachiliztzin. ynic tonahuatlahtolpan oquimocuepilitia. oquimotlallilitia ca ҫano ytech quimoquixtili. ytech quimanilli yn intlahtol. yn ilhuicatlamatinime. in Philosophosme yn Astrologosme. yn oquihtotiaque. yn quenin mochiuhtiuh = not entirely on his own and by his exclusive knowledge that he translated it and composed it in our Nahuatl language, for he also took it from the statements of those who know the heavens, the philosophers and astrologers who had said how it happens (central Mexico, 1611)
Annals of His Time: Don Domingo de San Antón Muñón Chimalpahin Quauhtlehuanitzin, James Lockhart, Susan Schroeder, and Doris Namala, eds. and transl. (Stanford: Stanford University Press, 2006), 178–9.
Attestations from sources in Spanish:
ynic peuhqui temachtili caxtilancopa ynic otzonquiz tonahuatlatolcopan temachtili = Comenzó a predicar en castellano y terminó el sermón en nuestra lengua náhuatl. (Tlaxcala, 1662–1692)
Juan Buenaventura Zapata y Mendoza, Historia cronológica de la Noble Ciudad de Tlaxcala, transcripción paleográfica, traducción, presentación y notas por Luis Reyes García y Andrea Martínez Baracs (Tlaxcala and México: Universidad Autónoma de Tlaxcala, Secretaría de Extensión Universitaria y Difusión Cultural, y Centro de Investigaciones y Estudios Superiores en Antropología Social, 1995), 422–423.