'Fire brand' in the Bible

When the sun was down and it was waxed dark, behold, there was a smoking furnace and a fire brand that went between the said pieces.

And Samson went out and caught three hundred foxes, and took firebrands, and fastened tail to tail, and put a firebrand in the midst between two tails.

For my days are consumed away like smoke, and my bones are burnt up as it were a firebrand.