0 a person who controls the dogs that are pulling a sledge (= an object used for travelling over snow and ice with long, narrow strips of wood or metal under it instead of wheels):
She was shaken by a nasty collision with a musher following behind her, whose sled sped out of control on the sharp slope of Eagle Summit.
An unusually warm winter left Alaska mushers travelling far and wide to find good conditions to train.
Once past Unalakleet, mushers face hundreds of miles of trail along the Bering Sea coast.
Most mushers are happy to have a few dogs with the focus necessary to run at the front.
