nahuatlatalhuia.

Headword: 
nahuatlatalhuia.
Principal English Translation: 

to be a nahuatlato or to serve as an interpreter for someone (see Molina and Karttunen)

Orthographic Variants: 
nauatlatalhuia
IPAspelling: 
nɑːwɑtɬɑhtɑlwiɑː
Alonso de Molina: 

nauatlatalhuia. nite. (pret. onitenauatlatalhui.) ser nauatlato o interprete de otro.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 063v. col. 2. v. col. 2. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

NĀHUATLAHTALHUIĀ vt to serve as interpreter for someone / ser nahuatlato o intérprete de otro (M) [(1)Cf.665r]. applic. NĀHUATLAHTOĀ.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 158.

Attestations from sources in English: 

ce teopixqui descalso. yn ompa quihualhuicaque Jabon. quinhualnahuatlahtalhuitia = a Discalced friar whom they brought from Japan, who came to interpret for them (central Mexico, 1610–1611)
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), 172–3.