muffle

Short definition from Wiktionary

Noun

1. 1
   Anything that mutes or deadens sound.
2. 2
   A warm piece of clothing for the hands.
3. 3
   A boxing glove.
4. 4
   A kiln or furnace, often electric, with no direct flames (a muffle furnace)
5. 5
   The bare end of the nose between the nostrils, especially in ruminants.
6. 6
   A machine with two pulleys to hoist load by spinning wheels, polyspast, block and tackle.

Verb

1. 1
   To wrap (a person, face etc.) in fabric or another covering, for warmth or protection; often with up.
2. 2
   To wrap up or cover (a source of noise) in order to deaden the sound.
3. 3
   To mute or deaden (a sound etc.).
4. 4
   To speak indistinctly, or without clear articulation.
5. 5
   To prevent seeing, or hearing, or speaking, by wraps bound about the head; to blindfold; to deafen.