Meaning

• An opportunity to test something out; a test.

  "They will perform the trials for the new equipment next week."

• Appearance at judicial court in order to be examined.

• A difficult or annoying experience.

  "That boy was a trial to his parents."

• A tryout to pick members of a team.

  "soccer trials"

• A piece of ware used to test the heat of a kiln.

• An internal examination set by Eton College.

Meaning

• To carry out a series of tests on (a new product, procedure etc.) before marketing or implementing it.

  "The warning system was extensively trialed before being fitted to all our vehicles."

• To try out (a new player) in a sports team.

  "The team trialled a new young goalkeeper in Saturday's match, with mixed results."

Meaning

• Pertaining to a trial or test.

• Attempted on a provisional or experimental basis.