tlacahuaca.

Headword: 
tlacahuaca.
Principal English Translation: 

for there to be noise or murmuring among the people; or, to hear the cries of one's enemies (see Molina)

Orthographic Variants: 
tlacauaca, tlacaoaca
IPAspelling: 
tɬɑkɑwɑkɑ
Alonso de Molina: 

tlacauaca. auer ruydo o mormullo de gente, o oyrse los alaridos que dan los enemigos.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 115v. col. 2. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

auh ic avel in onopan tlacaoacac = and that I be not murmured against (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 6 -- Rhetoric and Moral Philosophy, No. 14, Part 7, 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), 45.

themes: 
Sensory Perception (sound, smell, etc.)
War, Conflict