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

(obsolete) A witness.

(obsolete, transitive) To attest (a document) legally, and date it. / (obsolete, intransitive) To make a testament, or will.

(informal, slang, body building) testosterone

(law) A solemn, authentic instrument in writing, by which a person declares his or her will as to disposal of his or her inheritance (estate and effects) after his or her death, benefiting specified heir(s).

(transitive) To cover with tiles or stones, as a mosaic; to tile.

(religion, chiefly Christianity) The first major part of the Christian Bible, covering events before the coming of Christ, corresponding roughly to the Jewish Tanakh. Usually subdivided into the categories of law, history, poetry (or wisdom books), and prophecy.

The second half of the Christian Bible, which includes the four Gospels, the Book of Acts, the Epistles, and the Book of Revelation.

(law) Statements made by a witness in court. / An account of first-hand experience.

(cricket) A five-day first class match between sides representing the official Test nations. / (rugby union, field hockey) An international match between the teams of two nations.