Impalement

n.
  1. The act of impaling, or the state of being impaled.
  2. An inclosing by stakes or pales, or the space so inclosed.
  3. That which hedges in; inclosure.
  4. (Her.) The division of a shield palewise, or by a vertical line, esp. for the purpose of putting side by side the arms of husband and wife. See Impale, 3.