资料来源 : Webster's Revised Unabridged Dictionary (1913)

Susurration \Su`sur*ra"tion\, n. [L. susurratio, fr. susurrare
   to whisper: cf. F. susurration.]
   A whispering; a soft murmur. ``Soft susurrations of the
   trees.'' --Howell.

资料来源 : WordNet®

susurration
     n 1: the indistinct sound of people whispering [syn: {susurrus}]
     2: speaking softly without vibration of the vocal cords [syn: {whisper},
         {whispering}]