http://en.wikipedia.org/wiki/Hanged,_drawn_and_quartered
Until reformed under the Treason Act 1814, the full punishment for the crime of treason was to be hanged, drawn and quartered in that the condemned prisoner would be:
Dragged on a hurdle (a wooden frame) to the place of execution. This is one possible meaning of drawn
Hanged by the neck for a short time or until almost dead (hanged).
Disembowelled and emasculated and the genitalia and entrails burned before the condemned's eyes (this is another meaning of drawn—see the reference to the Oxford English Dictionary below)
The body beheaded, then divided into four parts (quartered).
Typically, the resulting five parts (i.e., the four quarters of the body and the head) were gibbeted (put on public display) in different parts of the city, town, or, in famous cases, in the country, to deter would-be traitors who had not seen the execution. After 1814, the convict would be hanged until dead and the mutilation would be performed post-mortem. Gibbeting was later abolished in England in 1843, while drawing and quartering was abolished in 1870.
The execution of Guy Fawkes' (Guy Fawkes) by Claes (Nicolaes) Jansz Visscher