A metal rod used to stir or adjust burning logs or coals in a fireplace, stove, or furnace.
I stirred the fire in the fireplace with a poker.
Common spelling using かき in kana for the verb stem.
Kanji spelling using 掻く; less common but still encountered.
Compound of 火 (hi, 'fire') + かき (kaki, stem of 掻く 'to stir, rake') + 棒 (bō, 'rod, stick').