Definition of trial:
to test something out; a test
; appearance at judicial court
"they will perform the trials for the new equipment next week."
pertaining to a trial or test; attempted on a provisional or experimental basis
to carry out a series of test
s on (a new product, procedure etc.) before marketing or implementing it; to try out (a new player) in a sports team
"the warning system was extensively trialled before being fitted to all our vehicles."