touchstone

American  

[tuhch-stohn] / ˈtʌtʃˌstoʊn /

noun

1. a test or criterion for the qualities of a thing.

   Synonyms:

   pattern, model, measure, standard

2. a black siliceous stone formerly used to test the purity of gold and silver by the color of the streak produced on it by rubbing it with either metal.

---

touchstone British  

/ ˈtʌtʃˌstəʊn /

noun

1. a criterion or standard by which judgment is made

2. a hard dark siliceous stone, such as basalt or jasper, that is used to test the quality of gold and silver from the colour of the streak they produce on it

---

Etymology

Origin of touchstone

First recorded in 1475–85; touch + stone

Example Sentences

After a more than three-year absence, it’s the beginning of the end for Netflix’s hit series, which has endeared gaggle of misfit kids to us and become a cultural touchstone.

From Los Angeles Times

But over the next half-century, her emotionally wrenching performances would turn her into an Oscar winner, while her idiosyncratic personal style made her a touchstone to generations of American women.

From The Wall Street Journal

Isaac: We spoke about those things at that first meeting, so that was actually like the touchstone of the whole thing.

From Los Angeles Times

Kohl’s Cash is fast becoming part of popular culture, much the way Bed Bath & Beyond’s “Big Blue” oversize 20% off coupons were a touchstone before the retailer filed for bankruptcy.

From The Wall Street Journal

The German electronic band would become one of his musical touchstones forever more.

From Los Angeles Times

Related Words

• barometer
• criterion