'ordeal' definitions:

Definition of 'ordeal'

(from WordNet)
noun
A severe or trying experience
noun
A primitive method of determining a person's guilt or innocence by subjecting the accused person to dangerous or painful tests believed to be under divine control; escape was usually taken as a sign of innocence [syn: ordeal, trial by ordeal]

Synonyms of 'ordeal'

From: Moby Thesaurus