1) A pit-prop.
This word is discussed at some length in the OED but its origin remains uncertain. No mention is made there of Wright who listed it as a West Riding coal-mining term for a pit-prop and compared it with ‘puncheon’ which had that meaning. There is earlier evidence in south Yorkshire accounts which supports that connection: 1637 they get Punch wood for the use of the coale pits, Sheffield
1778 for Felling and Boughing punch wood, Elsecar.
2) To deliver a sharp blow with the foot or knee.