something that goes gently; such as water the flows
Orthographic Variants:
çammantiuh
Alonso de Molina:
zammantiuh. cosa que va manssa, como agua que corre. &c Alonso de Molina, Vocabulario en lengua castellana y mexicana y mexicana y castellana, 1571, part 2, Nahuatl to Spanish, f. 14r. col. 1. Thanks to Joe Campbell for providing the transcription.