tests

1. A challenge, trial.
2. A cupel or cupelling hearth in which precious metals are melted for trial and refinement.
3. (academia) An examination, given often during the academic term.
4. A session in which a product or piece of equipment is examined under everyday or extreme conditions to evaluate its durability, etc.
5. (normally “Test”) A Test match.
6. The external calciferous shell, or endoskeleton, of an echinoderm, e.g. sand dollars and sea urchins.
7. Testa; seed coat.
8. Judgment; distinction; discrimination.

1. To challenge.

   Climbing the mountain tested our stamina.

2. To refine (gold, silver, etc.) in a test or cupel; to subject to cupellation.
3. To put to the proof; to prove the truth, genuineness, or quality of by experiment, or by some principle or standard; to try.

   to test the soundness of a principle; to test the validity of an argument

4. (academics) To administer or assign an examination, often given during the academic term, to (somebody).
5. To place a product or piece of equipment under everyday and/or extreme conditions and examine it for its durability, etc.
6. To be shown to be by test.

   He tested positive for cancer.

7. To examine or try, as by the use of some reagent.

   to test a solution by litmus paper

noun

A witness.

1. To attest (a document) legally, and date it.
2. To make a testament, or will.