motzacua.

Headword: 
motzacua.
Principal English Translation: 

for water to be stopped up, water that was running freely (see Molina); to be stopped up (see Sahagún)

Orthographic Variants: 
motzaqua
Alonso de Molina: 

motzaqua. (pret. omotzacu) estancar el agua que corria.
Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 061r. col. 1. Thanks to Joe Campbell for providing the transcription.

Attestations from sources in English: 

motzaqua = it is stopped up (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), 113.

themes: 
Water