Wordnet 3.0
NOUN (2)
1.
a mute for a violin;
[syn: sourdine, sordino]
2. an organ stop resulting in a soft muted sound;
WordNet (r) 3.0 (2006):
sourdine
n 1: a mute for a violin [syn: sourdine, sordino]
2: an organ stop resulting in a soft muted sound