In the process of being tried, especially in a court of law. For example, He would be put on trial for the murder of his wife. [Early 1700s]
As a test of something, on probation, as in They said we could take the vacuum cleaner on trial and return it if it was too noisy. [Early 1700s]
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.