susurration

 
Pronunciation: /ˌs(j)uːsʌˈreɪʃ(ə)n/
(also susurrus /s(j)uːˈsʌrəs/)

noun

[mass noun] literary
  • whispering or rustling: the susurration of the river

Origin:

late Middle English: from late Latin susurratio(n-), from Latin susurrare 'to murmur, hum'