Crucible – a vessel in which metals and other substances may be melted
The crew are civil (crucible) when the captain of their vessel is around because she can breath fire and melt metal.
Examples of crucible in a sentence
In foreign mints the molten metal is generally transferred from the crucible to the moulds.
When the ingot has been made and the crucible is full, the former is withdrawn and another is placed within.
Because Phil survived the crucible of the first war, he felt he could handle anything that came his way at home.