to boil something hard, to make something foam (see Karttunen)
IPAspelling:
poposotsɑ
Frances Karttunen:
POPOZOTZ(A) vt to boil something hard, to make something foam / hacer hervir mucho una cosa (S) [(1)Cf.73v]. See POZŌN(I). Frances Karttunen, An Analytical Dictionary of Nahuatl (Norman: University of Oklahoma Press, 1992), 203.