su·sur·ra·tion(ss-rshn) also su·sur·rus(s-sûrs, -sr-)
n.
A soft, whispering or rustling sound; a murmur.
[Middle English susurracioun, from Late Latin susurrti, susurrtin-, from Latin susurrtus, past participle of susurrre, to whisper, from susurrus, whisper, ultimately of imitative origin.]