Wrapped up closely, especially about the face; concealed from view; also, blinded by or as by something wrapped about the face and covering the eyes.Dulled or deadened: applied to a sounding body or to the sound produced by it.Having feathered feet, such as are found in many breeds of domesticated pigeons: thus a black, self-muffled tumbler is a tumbler of uniform black color with the feet and lower part of the tarsus feathered.