/muk"luk/ , n.
1. a soft boot worn by Eskimos, often lined with fur and usually made of sealskin or reindeer skin.
2. a similar boot with a soft sole, usually worn for lounging.
Also, mucluc, muckluck .
[ 1865-70, Amer.; maklak bearded seal, incorrectly taken to mean "sealskin," then transferred to boots made of sealskin ]