Definify.com
Webster 1913 Edition
Purgation
1.
The act of purging; the act of clearing, cleansing, or putifying, by separating and carrying off impurities, or whatever is superfluous; the evacuation of the bowels.
2.
(Law)
The clearing of one’s self from a crime of which one was publicly suspected and accused. It was either canonical, which was prescribed by the canon law, the form whereof used in the spiritual court was, that the person suspected take his oath that he was clear of the matter objected against him, and bring his honest neighbors with him to make oath that they believes he swore truly; or vulgar, which was by fire or water ordeal, or by combat. See
Ordeal
. Wharton.
Let him put me to my
purgation
. Shakespeare
Webster 1828 Edition
Purgation
PURGA'TION
,Noun.
1.
The act or operation of cleansing or purifying by separating and carrying off impurities or whatever is superfluous; applied to the body; as,the bowels are cleansed by purgation. So also in pharmacy and in chimistry, medicines, metals and minerals are purified by purgation.2.
In law, the act of cleansing from a crime, accusation or suspicion of guilt. This was canonical or vulgar. Canonical purgation, prescribed by the canon law, was performed before the bishop or his deputy, and by a jury of twelve clerks. The party accused first made oath to his own innocence,and then the twelve clerks or compurgators swore that they believed he spoke the truth; after which, other witnesses were examined upon oath, on behalf of the prisoner only. Vulgar purgation was performed by the ordeal of fire or water, or by combat. [See Ordeal.]