say it: TUHCH-stohn
touchstone is a noun meaning "a basis for comparison; a reference point against which other things can be evaluated". It carries one recorded sense.
a basis for comparison; a reference point against which other things can be evaluated
“the schools comply with federal standards”
“they set the measure for all subsequent work”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for touchstone come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.