susurration
Concise Oxford English Dictionary © 2008 Oxford University Press:
susurration /ˌsuːsʌˈreɪʃ(ə)n/ (also susurrus /suːˈsʌrəs/)
▶noun literary whispering or rustling.
– origin ME: from late L. susurratio(n-), from L. susurrare ‘to murmur, hum’.
'susurration' also found in these Oxford entries:

