Get the FREE one-click dictionary software for Windows
or the iPhone/iPad and Android apps
Adjective: susurrous  sû'sur-us [N. Amer], sû'sú-rus [Brit]
  1. Characterized by soft sounds
    "a slow sad susurrous rustle like the wind fingering the pines";
    - murmurous, rustling, soughing

See also: soft