to flow with force (speaking of a river), making a great noise (see Molina)
Alonso de Molina:
xaxamacatiuh. (pret. oxaxamacatia.) yr rezio el rio, haziendo gran estruendo Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 158v. col. 2. Thanks to Joe Campbell for providing the transcription.