su·sur·rous /sʊˈsɝəs, ˈsʌrəs/
  Su·sur·rous a.  Whispering; rustling; full of whispering sounds. [R.]
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  susurrous
       adj : characterized by soft sounds; "a murmurous brook"; "a
             soughing wind in the pines"; "a slow sad susurrous
             rustle like the wind fingering the pines"- R.P.Warren
             [syn: murmurous, rustling, soughing]