A witness.

One who gives evidence in court, or who witnesses a document. A testimony consists of evidence given by a competent witness under oath or affirmation; as distinguished from evidence derived from writings, and other sources.

In common parlance, "testimony" and "evidence" are synonymous. Testimony properly means only such evidence as is delivered by a witness on the trial of a cause, either orally or in the form of affidavits or depositions.

1. In law, a witness; one who gives evidence in court, or who witnesses a document; witnesses.
2. In medicine, either of the paired male reproductive glands, roundish in shape, that produce sperm and male sex hormones, and hang in a small sac (scrotum).
3. The male gonad or testicle that is one of two reproductive glands located in the scrotum that produces the male reproductive cells (spermatozoa) and the male hormones testosterone and inhibin.

From Latin, “a witness” because it “bears witness” to a man’s virility.

A legal definition: A witness; one who gives evidence in court, or who witnesses a document.

An eye-witness is preferred to others.

An eye-witness is preferred to others.

A legal maxim about testimony.

A lewd person is a sufficient witness to an act committed in a brothel.

A lewd person is a sufficient witness to an act committed in a brothel.

A maxim about the legality of testimony.

No one can be a witness in his own cause.

No one can be a witness in his own cause.

In law, “One eye-witness is worth more than ten ear-witnesses.”

One eye-witness is worth more than ten ear-witnesses.

One witness, no witness: According to this law-principle statement, testis unus, testis nullus is unsupported testimony and so it is no better than the complete absence of testimony; so, we should not give any trust to a story we hear from just one source.