The word "testament" primarily refers to a person's will, which is a legal document that outlines how their possessions and estate should be distributed after their death. Additionally, it can mean evidence or proof of something, often used in a context where it confirms or signifies the existence or truth of something.
The word "testament" comes from the Latin word testamentum, which means "a will or covenant." It is derived from testari, meaning to testify or to bear witness. This reflects the idea that a testament serves as a witness to one's final wishes.