tecuacua.

Headword: 
tecuacua.
Principal English Translation: 

a rough or harsh thing (see Molina), coarse, rugged; or, to chew

Orthographic Variants: 
tequaqua
Alonso de Molina: 

tequaqua. cosa aspera assi como silicio. &c.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 105r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

tequaqua = rough (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), 95.

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