empalement

from The Collaborative International Dictionary of English v.0.48

Empalement \Em*pale"ment\, n. [Cf. F. empalement, fr. empaler.
   See {Empale}.] [Written also {impalement}.]
   1. A fencing, inclosing, or fortifying with stakes.
      [1913 Webster]

   2. A putting to death by thrusting a sharpened stake through
      the body.
      [1913 Webster]

   3. (Her.) Same as {Impalement}.
      [1913 Webster]

from Bouvier's Law Dictionary, Revised 6th Ed (1856)

EMPALEMENT. A punishment in which a sharp polo was forced up the fundament. 
Encyc. Lond. h.t.