mushing [< mush, v. + -ing] North DCHP-1 (pre-1967)
1a n.
travelling on foot or snowshoe.
See also: mush ((v.)) (def. 2b) musher (def. 1)
1b n.
mushing the trails, following a migratory pattern of life.
See also: pitch ((v.)) (def. 1)
2 n.
the practice or skill of driving dogs.
See also: mush ((v.)) (def. 3a) musher (def. 2)