trial
noun
°an opportunity to test something out; a test.
"They will perform the trials for the new equipment next week."
°appearance at judicial court.
adjective
°Pertaining to a trial or test.
°Attempted on a provisional or experimental basis.
verb
°To carry out a series of tests on (a new product, procedure etc.) before marketing or implementing it.
°To try out (a new player) in a sports team.