i Register
In some senses, touchstone is marked as figuratively. Watch for register when choosing this word.
touchstone
UK /ˈtʌt͡ʃstəʊn/ US /ˈtʌt͡ʃstəʊn/
noun 2name 1
Definitions
noun
1
A stone used to verify the quality of gold alloys by rubbing them in order to leave a visible trace.
2
A standard of comparison or evaluation.
Near-synonym: comparator
The foregoing doctrine affords us also a touchstone for the trial of spirits.
name
1
A surname.
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