Shank has multiple meanings depending on the context. Here are some of the definitions:

• Anatomy: The part of the leg between the knee and the ankle in humans or the corresponding part in various other vertebrates.
• Cooking: A cut of meat from the leg of a steer, calf, sheep, or lamb. Due to the constant use of this muscle by the animal, it tends to be tough, dry, and sinewy, so it is best when cooked for a long time in moist heat. It is an ideal cut to use for beef bourguignon and is commonly used in soups.
• Slang: To undermine or discredit someone in a sneaky manner, as with innuendo, rumor, accusation, or the like.
• Golf: To hit the ball poorly by striking it with the heel of the club.
• Knife: To attack someone with a homemade knife.
• Other: The end of a drill bit that is gripped in a chuck. The early or main part of a period of time. The narrow piece of a shoes sole that connects to its heel.

In summary, shank can refer to a part of the leg, a cut of meat, a type of attack, a golf term, a knife, or a part of a drill bit or shoe.