Svanà,
m. sound, noise (in the older language applied to the roar of wind, thunder, water (cf. svàna: roaring water), etc; in later to the song of birds, speech and sound of any kind.)

[cf. Lat. sonus; Angl. Sax. swin; Eng. swan; Germ. schwan]

  MonierMonier-Williams, A Sanskrit Dictionary - Ed.Motilal Banarsidass, p.1280
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