Definitions of prove:

• verb:   be shown or be found to be

  Example: "She proved to be right"

• verb:   establish the validity of something, as by an example, explanation or experiment
• verb:   prove formally; demonstrate by a mathematical, formal proof
• verb:   obtain probate of

  Example: "Prove a will"

• verb:   take a trial impression of
• verb:   put to the test, as for its quality, or give experimental use to
• verb:   increase in volume
• verb:   provide evidence for
• verb:   cause to puff up with a leaven