"Proof" is a word in LAW AND LEGAL, ENGLISH

Proof, in civil process, ls a sufficient reason for the truth of a Juridical proposition by which a party seeks either to maintain hls own claim or to defeat the claim of another, whart Ev. t 1

Firm or successful in resisting; as, proof against harm;
waterproof; bombproof.

Used in proving or testing; as, a proof load, or proof
charge.

Firmness of mind; stability not to be shaken.

A process for testing the accuracy of an operation
performed. Cf. Prove, v. t., 5.

Being of a certain standard as to strength; -- said of
alcoholic liquors.

That degree of evidence which convinces the mind of any
truth or fact, and produces belief; a test by facts or arguments that
induce, or tend to induce, certainty of the judgment; conclusive
evidence; demonstration.

A trial impression, as from type, taken for correction or
examination; -- called also proof sheet.

Any effort, process, or operation designed to establish or
discover a fact or truth; an act of testing; a test; a trial.

Armor of excellent or tried quality, and deemed
impenetrable; properly, armor of proof.

The quality or state of having been proved or tried;
firmness or hardness that resists impression, or does not yield to
force; impenetrability of physical bodies.