Definition of trials:
(n) :
An occasion on which a person or thing is tested to find out how well they perform or how suitable they are.
(n) :
(medicine, sciences, research) A research study to test the effectiveness and safety of a drug, medical procedure, etc.
(n) :
(law) A meeting or series of meetings in a court of law at which evidence is presented to a judge (and sometimes a jury) to allow them to decide on a legal matter (especially whether an accused person is guilty of a crime).
(n) :
The testing of a product or procedure.
(n) :
An event in which athletes’ or animals’ abilities are tested as they compete for a place on a team, or to move on to the next level of a championship, for example.
(n) :
A difficult or annoying experience or person; (especially religion) such an experience seen as a test of faith and piety.