(mush) noun
1. Thick porridge, made by boiling meal or flour in water or milk.
2. Anything soft and pulpy.
3. Colloq. Sentimentality. [Var. of MASH]

(mush) v.i.
In Alaska and the Canadian Arctic, to travel on foot, especially over snow with a dog sled.
—interj. Get along! a call of the drivers of a dog team. [Prob. <mush on, alter. of F (Canadian) marchons, the cry of voyageurs and trappers to their dogs]
—mush′er noun