crucible /krooˈsi-bl/

1. An earthen pot for melting ores, metals, etc
2. A severe test or trial (figurative)

• rigorism
• rigorisms
• rigorist
• rigorists
• rigor mortis
• rigorous
• rigorously
• rigorousness
• rigorousnesses
• rigors
• rigour
• rigours
• rig out
• rig-out
• rig-outs
• rigs
• RIGS
• Rigsdag
• rig up
• Rigveda
• rigwiddie
• rigwiddies
• rigwoodie
• rigwoodies
• RIIA