IPA: //ˈfaɪərˌwʊd//
KK: /ˈfaɪərˌwʊd/
Wood that is cut and prepared to be used as fuel for burning, often in a fireplace or stove.
We gathered firewood to keep warm during the cold night.
Firewood is formed from "fire" (from Old English "fyr", meaning heat or flame) and "wood" (from Old English "wudu", meaning tree or timber). The word "firewood" refers to wood that is used as fuel for fire.
Think of 'fire' as the heat source and 'wood' as the material that burns — firewood is simply wood used to create heat.