A brand was a mark of ownership burned into the hide of an animal with a hot iron.
烙印是用烙铁烧在牲畜皮上的所有权标记。
《柯林斯英汉双解大词典》
2
In the few hours I was there, Shade scraped the outer layers off several leaves, dipped some others in scalding water, and burned the trunk with a soldering iron.
在我到达前几小时内，薛德刮去了几片树叶的外层，将另一些树叶浸在滚烫的开水里，还用烙铁去烫树干。
3
Then they burned the whole city and everything in it, but they put the silver and gold and the articles of bronze and iron into the treasury of the LORD'S house.