DCHP-1 Online
mud ((n.)) North 
muskeg, bog mud, etc. applied to the runners of a dog-sled so that it freezes into a smooth-sliding surface.
See also: mud ((v.)) (def. 2) mud runner shoeing
- 1942 For generations the Eskimos have used "mud" as a shoeing on the runners of their sleds. North mud is muskeg or decayed mosses and vegetable matter.
- 1946 "It's hardly worth while patching the [komatik] mud since it's so mild."
- 1942 For generations the Eskimos have used "mud" as a shoeing on the runners of their sleds. North mud is muskeg or decayed mosses and vegetable matter.