poyahui.

Headword: 
poyahui.
Principal English Translation: 

to become clear, to clear off

Daniel Garrison Brinton, Ancient Nahuatl Poetry: Containing the Nahuatl Text of XXVII Ancient Mexican Poems (1887), 161.

Attestations from sources in English: 

popoyauhquilitl = a type of plant or bush (quilitl) with leaves that are green-black and that are eaten raw or cooked; term incoporates poyahui in the reduplicative, to clear or shine
Anales del Museo Nacional de México, vol. 1–vol. 2, Part 1 (Mexico City, 1903), 129.