tomahuac.

Headword: 
tomahuac.
Principal English Translation: 

something fat, thick
James Lockhart, Nahuatl as Written: Lessons in Older Written Nahuatl, with Copious Examples and Texts (Stanford: Stanford University Press and UCLA Latin American Studies, 2001), 240.

Orthographic Variants: 
tomavac, tomauac
IPAspelling: 
tomɑːwɑk
Alonso de Molina: 

tomauac. cosa gorda, gruessa o corpulenta.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 149r. col. 1. Thanks to Joe Campbell for providing the transcription.

Frances Karttunen: 

TOMĀHUAC something plump, thick, fat / cosa gorda, gruesa o corpulenta (M) See TOMĀHUA.
Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 245.

Horacio Carochi / English: 

tomāhuac = gordo
Horacio Carochi, S.J., Grammar of the Mexican language with an explanation of its adverbs (1645), translated and edited with commentary by James Lockhart, UCLA Latin American Studies Volume 89 (Stanford: Stanford University Press, UCLA Latin American Center Publications, 2001), 36.

Attestations from sources in English: 

tomahuac (adjective) = great, heavy, large
Daniel Garrison Brinton, Ancient Nahuatl Poetry: Containing the Nahuatl Text of XXVII Ancient Mexican Poems (1877), 166.

niman quitlatizqui çe tomavac Candella = Then they will light a thick [Spanish style] candle.
Fray Alonso de Molina, Nahua Confraternities in Early Colonial Mexico: The 1552 Nahuatl Ordinances of fray Alonso de Molina, OFM, ed. and trans., Barry D. Sell (Berkeley: Academy of American Franciscan History, 2002), 102–103.

tomāhuac = fat
Michel Launey, An Introduction to Classical Nahuatl, translated and adapted by Christopher MacKay (Cambridge: Cambridge University Press, 2011), 110.

tomaoac = thick; tôtomaoac = each one thick (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 10 -- The People, No. 14, Part 11, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 133.

Attestations from sources in Spanish: 

1664 ypan meztl de junio yn opeuhqui ynic pupoca yn tepetl Popocatzin huel tomahuac yni pocyo ynicpac quizaya = en el año de 1664, en el mes de junio empezó a humear la montaña Popocatzin, un humo grueso le salía de la cima (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), 342–343.

themes: 
Measurements, Quantities