Definition of mush:
"mom said to add the potatoes to the mush."
(v) :
to
squish so as to break into smaller pieces or to combine with something else; to
walk, especially across the
snow with
dogs
"he mushed the ingredients together."
(interjection) :
a directive given (usually to dogs or a horse) to start moving, or to move faster
"when the lone cowboy saw the indians, he yelled mush, cha,
giddyup!"