According to the dictionary.

mush¹

n

1. a soft pulpy mass or consistency

2. (Cookery) US a thick porridge made from corn meal

3. Informal cloying sentimentality

4. (Communication Arts / Broadcasting) Radio interference in reception, esp a hissing noise

vb

(tr) to reduce (a substance) to a soft pulpy mass

[from obsolete moose porridge; probably related to mash; compare Old English mōs food]

---

mush² Canadian

interj

an order to dogs in a sled team to start up or go faster

vb

1. to travel by or drive a dog sled

2. (intr) to travel on foot, esp with snowshoes

n

a journey with a dogsled

[perhaps from French marchez or marchons, imperatives of marcher to advance]

musher n

---

mush³

n Brit

a slang word for face [1]

[from mush¹, alluding to the softness of the face]

---

mush⁴

n

Brit slang a familiar or contemptuous term of address

[probably from Gypsy moosh a man]

Collins English Dictionary – Complete and Unabridged © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003