proof [-'s] n

ME preve < OFr < late L. probāre, see prove, v.

  1. Evidence; sign; indication; confirmation; validation; verification; certification; grounds for belief.
  2. Test; check; experiment; process for ascertaining the truth of a fact.
  3. Protection; defense; armor; covering.
  4. Firmness; stability; unshakeableness; immovability; steadiness; support.
  5. [Fig.] sight; perception; beholding an actual physical being.