Muffler

Part of speech: noun (n.)

1. Anything used in muffling; esp., a scarf for protecting the head and neck in cold weather; a tippet. Fortune is painted blind, with a muffler above her eyes. Shak.

2. A cushion for terminating or softening a note made by a stringed instrument with a keyboard.

3. A kind of mitten or boxing glove, esp. when stuffed.

4. One who muffles.