See also: Touchstone
touchstone (plural touchstones)
- A stone used to check the quality of gold alloys by rubbing them to leave a visible trace.
- (figuratively, by extension) A standard of comparison or evaluation.
- 2012, Ann Baynes Coiro, Thomas Fulton, Rethinking Historicism from Shakespeare to Milton (page 243)
- In the print firestorm that followed the publication of the royal couple's letters, the generalissima was one polemical touchstone. The Annotations to The Kings Cabinet Opened itself depicted the queen as an enemy to king and country: […]
stone used to test the quality of gold alloys
standard of comparison or evaluation