Dictionary

To challenge.

Example: Climbing the mountain tested our stamina.

To refine (gold, silver, etc.) in a test or cupel; to subject to cupellation.

To put to the proof; to prove the truth, genuineness, or quality of by experiment, or by some principle or standard; to try.

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

(academics) To administer or assign an examination, often given during the academic term, to (somebody).

To attest (a document) legally, and date it.

To make a testament, or will.

The act of conducting a test; trialing, proving.

Difficult, tough