Ham

noun

1. The region back of the knee joint; the popliteal space; the hock.
2. A thigh and buttock of an animal slaughtered for meat.
3. Meat from the thigh of a hog cured for food.

   "a little piece of ham for the cat"

4. The back of the thigh.
5. Electronic mail that is wanted; mail that is not spam or junk mail.