A vessel or melting pot, composed of some very refractory substance, as clay, graphite, platinum, and used for melting and calcining substances which require a strong degree of heat, as metals, ores, etc.
A hollow place at the bottom of a furnace, to receive the melted metal.
A test of the most decisive kind; a severe trial; as, the crucible of affliction.
Men and women whose early youth was shaped in the ordeal of the Great Depression showed the values formed in that crucible when tyranny threatened a world. Steve Buyer
Surmounting difficulty is the crucible that forms character. Tony Robbins
America is God's Crucible, the great Melting-Pot where all the races of Europe are melting and re-forming! Israel Zangwill
If American literature has a few heroes, Miller is one of them. He refused to name names at the McCarthy hearings, and his play 'The Crucible' analysed the hearings in the context of a previous American mass psychosis, the Salem witch trials. Jane Smiley
No, the real American has not yet arrived. He is only in the Crucible, I tell you - he will be the fusion of all races, perhaps the coming superman. Israel Zangwill