Definition of torture and pain
WWWebster Dictionary TORTURE:
noun
1 a : anguish of body or mind : AGONY b : something that causes agony or pain
2 : the infliction of intense pain (as from burning, crushing, or wounding) to punish, coerce, or afford sadistic pleasure
3 : distortion or overrefinement of a meaning or an argument : STRAINING
transitive verb
1 : to cause intense suffering to : TORMENT
2 : to punish or coerce by inflicting excruciating pain
3 : to twist or wrench out of shape : DISTORT, WARP
Webster's Third New International Dictionary also defines torture as : torment or agony induced to penalize religious or political dissent or nonconformity, to extort a confession or a money contribution...
Definition of pain from pain therapy.
International Association for the Study of Pain - Pain Definitions and Curricula
Raven's Chronic Pain Pages