A soft, thick, paste-like mixture (often food); or to squash something into a soft mass; or to travel with sled dogs by saying 'mush' as a command.
From Old French 'mouche' or uncertain origin, possibly from 'mash.' The sled dog command 'mush' likely comes from French 'marche' (march), contracted and Anglicized over time.
Sled dog drivers shouting 'Mush!' is so famous in popular culture, but historians aren't even sure if real mushers actually said it that much—it might have been more common in stories!
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