touchstone suggests a simple test of the authenticity or value of something intangible.

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Parasmani (lit. 'Touchstone'), a 1963 Indian film.

TOUCHSTONE definition: a test or criterion for the qualities of a thing. See examples of touchstone used in a sentence.

Definition of touchstone noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

TOUCHSTONE definition: 1. an established standard or principle by which something is judged: 2. an established standard…. Learn more.

touchstone (ˈtʌtʃˌstəʊn) n 1. a criterion or standard by which judgment is made

touchstone, n. & adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary