touchstone
From WikiWord, the free dictionary
/ˈtʌtʃstəʊn/
English
Definitions
noun
- A stone used to check the quality of gold alloys by rubbing them to leave a visible trace.
- (by extension) A standard of comparison or evaluation.
Related words
Synonyms
criterionstandardmeasurebedrockcornerstonekeystonecentrepiecestakeyardsticklynchpinedgetouchbenchmarkfoundationbackbonetest