to blaze: of a fire that is alight and burning fiercely, said of the fire itself and never of what the fire destroys
This word survives in the Bible inside a single stock phrase, repeated eight times in one chapter. Daniel 3 tells of the furnace Nebuchadnezzar heats for three men who will not bow to his golden statue, and every mention of that furnace is worded the same way: "the furnace of blazing fire." The phrase sounds through the chapter like a drumbeat. It is in the herald's threat, in the accusation brought against the three, in the king's ultimatum, in their own steady answer that their God is able to rescue them from it, in the order given to the soldiers, and finally at the door of the furnace in Daniel 3:26, where the king calls the three back out alive.
The word describes the fire, not the furnace. In Aramaic it attaches to the fire inside, so the phrase reads more exactly as "the furnace of fire, the blazing one." That is not a fussy point. It is the difference between saying an oven is hot and saying the fire in it is roaring, and the chapter presses that harder picture: the furnace is stoked seven times hotter than usual (אֲזָא), and its flames kill the soldiers who carry the three men to its mouth.
The root is at home in both biblical languages and keeps the same shape of meaning in each. Aramaic builds a noun from it for the burning itself (יְקֵדָה), used in Daniel 7:11 of the beast given over to the fire. Hebrew has the matching verb (יָקַד), which likewise describes fire that stays alight, whether on the altar where it must never go out or in the prophets' pictures of anger burning on. Neither word says that something was burned up. That work belongs to other verbs.