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A sign for the vessel in which substances are melted at high heat.
Also known as: Crucible sign
A thick-walled pot able to withstand furnace temperatures, used for melting metals and for assaying. The word's figurative sense — a severe test — comes directly from what the object does.
Denotes a crucible, a thick-walled refractory vessel used to melt metals and minerals at furnace heat.
The figurative English sense of a crucible as a severe trial derives from the vessel's use in assaying, where a sample is tested by fire.
A deep tapering pot, wider at the rim than the base, drawn in outline.