1) As a verb, to thrust or poke, as with a stick or sword.
1575 Simon Tanfeld, a dronkarde, drue his knife and porred with it at Ambrose Jackson in Acaster church upon a Sondaie.
The noun usually referred to an iron poker:
1451 unum porr ferri, Brandsby
1559 a brandrethe and one iron porre, Hipswell
1612 four iron porres and one iron cowlerayke, Brandsby.