Muff. A case or cover into which both hands may be thrust to keep them warm. It is commonly of a rounded form, and made of fur, but sometimes of velvet or silk in a bag shape or other fanciful design. The muff was introduced into France toward the close of the 16th century, at which time the fur was placed inside, and satin, velvet or some other expensive material without. It was used by both men and women in the 17th century and often was an essential part of the dress of a man of fashion, being commonly suspended from the neck by a string, but is now exclusively an article of female apparel. Together with a boa or tippet it forms a " set of furs."