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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