Sordines is a word used to describe the dampening devices placed on the strings of a musical instrument, such as a violin or a piano, to lower the volume of sound produced. There are a number of synonyms for sordines, including mutes, dampers, silencers, and muffers. These words all refer to the same type of device, which can be made from materials such as metal, rubber, or cloth, and are used to alter the tone and intensity of the sound produced by an instrument. Musicians often use sordines to create a specific sound or to practice without disturbing others.